learndash_binary_selector_args

 <?php
/**
 * Example usage for learndash_binary_selector_args filter.
 */
add_filter(
	'learndash_binary_selector_args',
	function( $args = array(), $selector_class = '' ) {

		// Example 1: change the search results number of items on the 'Learndash_Binary_Selector_Group_Courses' selector only
		if ( $selector_class == 'Learndash_Binary_Selector_Group_Courses' ) {
			// The 'search_number' $args element controls the number of items max to return during a search. By default
			// this will match the 'number' element which is based on the number of posts to show per page.
			$args['search_number'] = 100;
		}

		// Example 2: Change the height of all selectors.
		// There are two elements for the height, 'max_height' and 'min_height'. The default value for both of these is '250px'.
		// These are rendered into inline style elements.
		$args['min_height'] = $args['max_height'] = '450px';

		// Example 3: Change the User Groups 'Learndash_Binary_Selector_User_Groups' selector post per page.
		if ( $selector_class == 'Learndash_Binary_Selector_User_Groups' ) {
			$args['posts_per_page'] = 10;
		}

		// always return the $args array
		return $args;
	},
	50,
	2
);

add_filter(
	'learndash_binary_selector_args',
	function( $args = array(), $selector_class = '' ) {

		$args['search_number'] = 100;

		return $args;
	},
	50,
	2
);

add_filter( 'learndash_binary_selector_args', 'learndash_binary_selector_args_proc', 10, 2 );
function learndash_binary_selector_args_proc( $args, $selector_class ) {

	// Example to override the number of items per page. The default value is pulled from
	// the Settings > Reading > Posts per page value.
	 $args['number']         = 20;
	 $args['posts_per_page'] = 20;

	// Example changing only specific selectors
	if ( $selector_class == 'Learndash_Binary_Selector_Group_Courses' ) {
		// change the $args array items
	}

	// as this is a filter we are expected to return the $args array passed in to this function
	return $args;
}