vlc player, enable en queue(add to playlist) on right click

By default, on double clicking on a song in folder, the song is opened in new vlc player session. There is no "add to playlist" option. To change this settings,

1. On the vlc player, go to tools->preferences
2. click on 'interface' (default) on the left menu,  on the  right, click on 'instances'
3. check both 'allow only one instance' and 'enqueue when in one instance mode'