Yeah, you have to go into the territory and click on the 3 little dots and then subscribe. You can also subscribe to a single post so that you always get notifications when someone makes a new comment.

To mute a territory, you just have to click the 3 little dots on any post in the main feed and then mute OR you can go into the territory and mute it from the territory description.

I think once there's a certain number of posts, people will have to subscribe to territories or they will miss things cause of so much noise in the home feed.