Disconnecting a social channel
If you select "all current and future pages" when connecting Facebook and Instagram, you may end up with a lot of social channels connected.
You can disconnect the channels you don't need, so that they don't appear when you are selecting listing or content to post. Disconnecting a social channel will remove it from any channel groups.
Click on the gear icon next to the channel you want ot disconnect:

Click disconnect:

Note that disconnecting doesn't remove it from completely from your TREV account, nor does it prevent any scheduled posts from being shared. It just flags the channel as disconnected so you can't create a new post to it.