Every time you make a post on My.Club, you can let your Twitter (X) audience know about it. This is where the Announce on Twitter feature comes in handy.
You can find it in Account Settings.
When you activate the toggle, you will see a pop-up window where you need to log in to your Twitter (X) account and authorize My.Club to access it.
If at some point you don't want tweets about your posts anymore, just click / tap Unlink Twitter.