You can cross post to different communities via the two double/overlapping squares that appear under the headline of your original post.
There will be a remark and link to all cross posted posts/communities the same URL has been posted to.
Hope, this helps :)
The major apps have announced to shut down on June 30th.
It’s expected that there’ll be a major influx of former app users - if they haven’t left reddit already
Thank you for this explanation! I’ve been searching for an answer on how to subscribe to communities that are not on your home instance.
I hate to direct traffic to them, but here is the Twitter link to what seems to be the video.