Universal iPhone/iPad App showing a general schedule agenda of events. When the 4th row is selected, it shows a second list of workshop sessions. Each list should show the Detail view for their own events/sessions.

DetailfromConcurrentViewController.h

@interface DetailfromConcurViewController : UIViewController <UISplitViewControllerDelegate>

@property (strong, nonatomic) id detailItems;



@property (weak, nonatomic) IBOutlet UILabel *nameText;

@property (weak, nonatomic) IBOutlet UILabel *timeText;

@property (weak, nonatomic) IBOutlet UILabel *locationText;
@property (weak, nonatomic) IBOutlet UILabel *speakersText;

DetailViewController.h

#import <UIKit/UIKit.h>

@interface DetailViewController : UIViewController <UISplitViewControllerDelegate>

@property (strong, nonatomic) id detailItem;

@property (weak, nonatomic) IBOutlet UILabel *nameText;

@property (weak, nonatomic) IBOutlet UILabel *timeText;

@property (weak, nonatomic) IBOutlet UILabel *locationText;
@property (weak, nonatomic) IBOutlet UILabel *speakersText;

@end

MasterConcurrentViewController.m

//
//  MasterConcurrentViewController.m
//  
//
//  Created by admin 33 on 5/20/13.
//  Copyright (c) 2013 sdbwebsolutions. All rights reserved.
//

#import "MasterConcurrentViewController.h"
#import "DetailfromConcurViewController.h"

@interface MasterConcurrentViewController ()

@end

@implementation MasterConcurrentViewController

- (void)awakeFromNib
{
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
        self.clearsSelectionOnViewWillAppear = NO;
        self.contentSizeForViewInPopover = CGSizeMake(320.0, 600.0);
    }
    [super awakeFromNib];
}


- (id)initWithCoder:(NSCoder *)aCoder {
    self = [super initWithCoder:aCoder];
    if (self) {
        // Customize the table
        
        // The className to query on
        self.parseClassName = @"ConcurrentClass";
        
        // The key of the PFObject to display in the label of the default cell style
        self.textKey = @"name";
        
        // Uncomment the following line to specify the key of a PFFile on the PFObject to display in the imageView of the default cell style
        //self.imageKey = @"photo";
        
        // Whether the built-in pull-to-refresh is enabled
        self.pullToRefreshEnabled = YES;
        
        // Whether the built-in pagination is enabled
        self.paginationEnabled = NO;
        
        // The number of objects to show per page
        self.objectsPerPage = 25;
    }
    return self;
}



- (void)viewDidLoad
{
    [super viewDidLoad];
  
    
    self.detailfromConcurViewController = (DetailfromConcurViewController *)[[self.splitViewController.viewControllers lastObject] topViewController];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}



- (IBAction)cancelAndDismiss:(id)sender {
    
    NSLog(@"cancel button pressed!");
    
    [self dismissViewControllerAnimated:YES completion:^{
        NSLog(@"dismissing master 2");
    }];
}

#pragma mark - View lifecycle



- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
}

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];
}

- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}


#pragma mark - Parse

- (void)objectsDidLoad:(NSError *)error {
    [super objectsDidLoad:error];
    
    // This method is called every time objects are loaded from Parse via the PFQuery
}

- (void)objectsWillLoad {
    [super objectsWillLoad];
    
    // This method is called before a PFQuery is fired to get more objects
}


// Override to customize what kind of query to perform on the class. The default is to query for
// all objects ordered by createdAt descending.
- (PFQuery *)queryForTable {
    PFQuery *query = [PFQuery queryWithClassName:self.parseClassName];
    
    // If no objects are loaded in memory, we look to the cache first to fill the table
    // and then subsequently do a query against the network.
    if ([self.objects count] == 0) {
        query.cachePolicy = kPFCachePolicyCacheThenNetwork;
    }
    
    [query orderByAscending:@"name"];
    
    return query;
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([segue.identifier isEqualToString:@"concurrentSegue"]) {
        
        NSLog(@"passing by concurrent segue");
        
        DetailfromConcurViewController *detailConcurViewController = [segue destinationViewController];
        NSInteger row = [[self tableView].indexPathForSelectedRow row];
        detailConcurViewController.detailItems = [self.objects objectAtIndex:row];
        
        
    }
}




- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object {
    static NSString *CellIdentifier = @"concurrentCell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
        
        
    }
    
    // Configure the cell
    cell.textLabel.text = [object objectForKey:@"name"];
    
   
    
    cell.detailTextLabel.text = [object objectForKey:@"time"];
        
    return cell;
}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 65;
}






#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [super tableView:tableView didSelectRowAtIndexPath:indexPath];
    
    NSLog(@"executing didSelectRowAtIndexPath");
    
    [self performSegueWithIdentifier:@"concurrentSegue" sender:self];
}



@end

MasterViewController.m

//
//  MasterViewController.m
//  
//
//  Created by admin 33 on 5/14/13.
//  Copyright (c) 2013 sdbwebsolutions. All rights reserved.
//

#import <QuartzCore/QuartzCore.h>
#import "MasterViewController.h"
#import "DetailViewController.h"
#import "MasterCell.h"
#import "MasterConcurrentViewController.h"


@interface MasterViewController (){
    NSMutableArray *_objects;
    NSArray *_scheduleData;
    NSArray *_programSections;
    
}

@end

@implementation MasterViewController

- (void)awakeFromNib
{
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
        self.clearsSelectionOnViewWillAppear = NO;
        self.contentSizeForViewInPopover = CGSizeMake(320.0, 600.0);
    }
    [super awakeFromNib];
}

-(void)createProgramData {
    
    NSMutableArray *firstDay;//Wed
    NSMutableArray *secondDay;//Thurs
    NSMutableArray *thirdDay;//Fri
    NSMutableArray *fourthDay;//Sat
    
    _programSections = @[@"Wed,June 19,2013",@"Thurs,June 19,2013",@"Fri,June 19,2013",@"Sat,June 19,2013"];
    
    firstDay = [[NSMutableArray alloc] init];
    secondDay = [[NSMutableArray alloc] init];
    thirdDay = [[NSMutableArray alloc] init];
    fourthDay = [[NSMutableArray alloc] init];
    
    //Wed
    [firstDay addObject:@{@"name":@"Registration",
                        @"time":@"11:00AM - 7:00PM",
                        @"location":@"Hallway",
                        @"speakers":@"test speaker day 1"}];
    [firstDay addObject:@{@"name":@"New Program Institute",
                         @"time":@"1:00PM - 3:30PM",
                         @"location":@"more info see program manual",
                         @"speakers":@"more info see program manual"}];
    //Thurs
    [secondDay addObject:@{@"name":@"Registration",
                         @"time":@"7:00AM - 7:00PM",
                         @"location":@"Hallway",
                         @"speakers":@"-"}];
    [secondDay addObject:@{@"name":@"Continental Breakfast",
                         @"time":@"7:30AM - 8:30AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 2"}];
    [secondDay addObject:@{@"name":@"Vendors and Exhibitors",
                         @"time":@"7:30AM - 8:30AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 2"}];

    [secondDay addObject:@{@"name":@"Opening Session",
                         @"time":@"7:30AM - 8:30AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 2"}];
    

    [secondDay addObject:@{@"name":@"Concurrent Sessions",
                         @"time":@"10:30AM - 12:00AM",
                         @"location":@"see Second master VC",
                         @"speakers":@"list of conc"}];
    
    [secondDay addObject:@{@"name":@"Award Luncheon & Exhibits",
                         @"time":@"7:30AM - 8:30AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 2"}];
    
    [secondDay addObject:@{@"name":@"Concurrent Afternoon Sessions",
                         @"time":@"1:30AM - 3:00AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 2"}];
    
    [secondDay addObject:@{@"name":@"Table Sessions Tertulia",
                         @"time":@"7:30AM - 8:30AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 2"}];
    [secondDay addObject:@{@"name":@"Family Night",
                         @"time":@"7:30AM - 8:30AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 2"}];

    //Fri
    
    [thirdDay addObject:@{@"name":@"Registration",
                         @"time":@"7:00AM - 7:00PM",
                         @"location":@"Hallway",
                         @"speakers":@"-"}];
    [thirdDay addObject:@{@"name":@"Continental Breakfast",
                         @"time":@"7:30AM - 8:30AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 3"}];
    
    //Sat
    [fourthDay addObject:@{@"name":@"Registration",
                         @"time":@"7:00AM - 9:00AM",
                         @"location":@"Hallway",
                         @"speakers":@"test speaker day 3"}];
    [fourthDay addObject:@{@"name":@"Continental Breakfast",
                         @"time":@"7:30AM - 8:30AM",
                         @"location":@"Grand Ballroom",
                         @"speakers":@"test speaker day 4"}];
    
    _scheduleData = @[firstDay,secondDay,thirdDay,fourthDay];
    
    
}

- (id)initWithStyle:(UITableViewStyle)style
{
    self = [super initWithStyle:style];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    // Uncomment the following line to preserve selection between presentations.
    // self.clearsSelectionOnViewWillAppear = NO;
 
    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem;
    
    self.detailViewController = (DetailViewController *)[[self.splitViewController.viewControllers lastObject] topViewController];
    
    
    [self createProgramData];
    
    
    [[self tableView] setBackgroundView:
     [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bg_sand.png"]]];
    
}





- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}



#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{

    // Return the number of sections.
    return [_programSections count];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

    // Return the number of rows in the section.
    return [_scheduleData[section] count];
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
  return _programSections[section];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"programCell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    
    // Configure the cell...
    cell.textLabel.text=
    _scheduleData[indexPath.section][indexPath.row][@"name"];
    
    
    return cell;
}


#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (indexPath.section == 0) {
        self.detailViewController.detailItem=_scheduleData[indexPath.section][indexPath.row];
    }
    else if (indexPath.section == 1){
        
        if (indexPath.row == 4) {
        
            NSLog(@"selected concurrent sessions row 4");
            
            [self performSegueWithIdentifier:@"concurrentSegue" sender:self];
                            
        }
        else {
            self.detailViewController.detailItem=_scheduleData[indexPath.section][indexPath.row];
        }
        
    }
    else if(indexPath.section == 2){
        NSLog(@"selected section 2 -any row");
        self.detailViewController.detailItem=_scheduleData[indexPath.section][indexPath.row];
    }
    
    else{
        NSLog(@"Selected section 3 - any row");
        self.detailViewController.detailItem=_scheduleData[indexPath.section][indexPath.row];
    }
    
    //self.detailViewController.detailItem=_scheduleData[indexPath.section][indexPath.row];
    
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"showDetailSegue"]) {
        
        DetailViewController *destinationViewController = [[segue destinationViewController] visibleViewController];//warning here
       // UINavigationController *nvc = [segue destinationViewController];
        // UINavigationController *nc = (UINavigationController *)segue.destinationViewController;
        
        NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
                
       
        
        destinationViewController.detailItem = _scheduleData[indexPath.section][indexPath.row];
        
    }
    
}


-(IBAction)unwindfromConcurTvc:(UIStoryboardSegue*)sender{
    NSLog(@"unwindbacktoHomeMaster");//not working
    
}

@end