viper_1 on Nostr: Respectfully help a newbie out; how do I post to say #docchain only? Using Damus / ...

Respectfully help a newbie out; how do I post to say #docchain only? Using Damus / iPhone it seems I can see post and replies on “home” and post there; or search hashtag docchain and post replies. On home I do not see posts to doc chain though…..