Are there too many folders or channels that aren't relevant for you and make your channel tree too long? I you don't need a channel/ folder, you can archive them. While archiving, these channels or folders aren't removed. You can always unarchive them and go on communicating in these channels or folders.
To archive a channel, follow these steps:
Hover your cursor over the channel name in the channel tree on the left;
Click the 3-dot button that appears to the right of the channel name;
Select Archive.
The channel is archived!
You can view archived channels activating the filter Show archived channels.
To unarchive a dormant channel, send a post to this channel.
You can remove channels without posts, while others can be archived.