Plex app - watch together feature - how to use?

here is black's app and they have interesting feature uh where you can watch together so there are some uh movies here and then if you tap on three dots or tap on share um okay so somewhere i've seen it where you can okay let's just go to the home screen and then yeah some of the movies you can actually tap on three dots in top right and then you can just watch together invite your friends like okay so just only on some titles here so you can just tap on three dots and then there is watch together feature add friends and users and sharing to watch together and that's basically how it works and yeah you can just watch this movie or together probably wait does it require a subscription or not so you need to add some users here first so hope that is helpful