@fellmoon@bsd.network There are several ways to use groups, but not if you have access via Mastodon.

The services around #Misskey #Sharkey #IceShrimp can use groups. Restriction that these users use this software

#Freindica and #Hubzille can use groups as you described.

But #Lemmy would also offer you this.

All services in the Fediverse