Playlist Gallery for Youtube plugin means that you can create Gallery of Youtube Playlists through the use of ChannelId of youtube channel. You may create a number of playlist from a number of channel. To create a Playlist Gallery you want quick code [ncpyt_playlists] and ChannelId of the youtube channel, to create gallery simply create web page and use shortcodes like [ncpyt_playlists channel_id=’<youtube channel id here>’], that is the shortcode you’ll want to place the place you need to present the Playlist Gallery for Youtube from perticular channel.
To make use of this plugin you must get api key from google console this plugin makes use of youtube api v3.
To put in plugin check video here