creating metaboxes

metaboxes.php

if ( function_exists( 'slt_cf_register_box') )
    add_action( 'init', 'organizer_info' );

function organizer_info() {

    slt_cf_register_box( array(
        'type'      => 'post',
        'title'     => 'Organizer Info',
        'id'        => 'organizer-info',
        'context'   => 'normal',
        'priority'  => 'high',

        'fields'    => array(
            array(
                'name'          => 'organizer-logo',
                'label'         => 'Organizer Logo',
                'description'   => 'Upload the Organizer logo (max size 350x350px)',
                'type'          => 'file',
                'scope'         => array('incsub_event'),
                'capabilities'  => array( 'edit_posts' )
            ),
            array(
                'name'          => 'organizer-url',
                'label'         => 'Organizer URL',
                'description'   => 'The Organizer website URL',
                'type'          => 'text',
                'default'       => 'http://',
                'scope'         => array('incsub_event'),
                'capabilities'  => array( 'edit_posts' )
            ),
            array(
                'name'          => 'organizer-email',
                'label'         => 'Organizer Contact Email address',
                'description'   => 'The Organizer Email address for messages regarding the event',
                'type'          => 'text',
                'scope'         => array('incsub_event'),
                'capabilities'  => array( 'edit_posts' )
            ),
        )
    ));
}