Create custom MainWP menu items.

Custom MainWP Menu

/** 
* MainWP Custom Menu. 
* Add a custom menu/submenu to the MainWP Dashboard main menu.
*
* Filter Hook: mainwp_main_menu
* Source: https://mainwp.dev/hooks/mainwp_main_menu/
*
* Filter Hook: mainwp_main_menu_submenu
* Source: https://mainwp.dev/hooks/mainwp_main_menu_submenu/
**/

/**
*  Build Top Level menu array & merge into MainWP $left_menu array.
*
* Example:
* 	// Top Level Menu item.
*	$additional_menu = array(
*		'Extras', // Label.
*		'extras-menu', // Slug.
*		'https://ads.google.com/' // href.
*	);
*	$left_menu['mainwp_tab'][] = $additional_menu;
*	$left_menu['mainwp_tab'] = array_merge( $left_menu['mainwp_tab'], $sub_menu_after );
**/
function mycustom_mainwp_main_menu( $left_menu ) {
	
		// Order to place menu item.
		$index          = 0;
		$sub_menu_after = array_splice( $left_menu['mainwp_tab'], $index );
	
		// Top Level Menu item.
		$additional_menu = array(
			'Extras',
			'extras-menu',
			'https://ads.google.com/'
		);
		$left_menu['mainwp_tab'][] = $additional_menu;
		$left_menu['mainwp_tab'] = array_merge( $left_menu['mainwp_tab'], $sub_menu_after );
		
		// Return altered $left_menu array.
		return $left_menu;
	
} add_filter( 'mainwp_main_menu', 'mycustom_mainwp_main_menu', 10, 1 );

/**
* Build Submenu Item & merge into MainWP $left_submenu array.
*
* Example:
* 	// Submenu Item 1.
*	$additional_submenu = array(
*		'Google Adwords', // Label.
*		'https://ads.google.com/', // href.
*		'', // Leave blank.
*		'_blank' // Open in new tab.
*	); 
*	$left_submenu['extras-menu'][] = $additional_submenu;
**/
function mycustom_mainwp_main_menu_submenu( $left_submenu ) {
		
		// Submenu Item 1.
		$additional_submenu = array(
			'Google Adwords',
			'https://ads.google.com/',
			'',
			'_blank'
		); 
		$left_submenu['extras-menu'][] = $additional_submenu;
		
		// Submenu Item 2.
		$additional_submenu = array(
			'Google Analytics',
			'https://analytics.google.com/analytics/web/',
			'',
			'_blank'
		); 
		$left_submenu['extras-menu'][] = $additional_submenu;
		
		// Submenu Item 3.
		$additional_submenu = array(
			'Google Search Console',
			'https://search.google.com/search-console/',
			'',
			'_blank'
		); 
		$left_submenu['extras-menu'][] = $additional_submenu;
		
		// Return altered left submenu.
		return $left_submenu;
	
} add_filter( 'mainwp_main_menu_submenu', 'mycustom_mainwp_main_menu_submenu', 10, 1 );