functions.php

/**
* Temporary solution for zoom plugin wordpress; Shortcode for Loggedin Users
**/

function calling_nested_shortcode($atts) {
		$a = shortcode_atts( array(
        'meeting_id' => '',
        'class' => 'test',
        'id' => 'test',
        'title' =>'test',
    ), $atts );

		//Check is user Logged in
		if( is_user_logged_in() ) {
			//True
			$link = do_shortcode( '[zoom_api_link meeting_id="'.$a['meeting_id'].'" class="'.$a['class'].'" id="'.$a['id'].'" title="'.$a['title'].'"]' );
		} else {
			//False
			$link = 'User Must be logged in to See the link';
		}
		
    return link;
}

add_shortcode( 'another_shortcode', 'calling_nested_shortcode' );