1.
Set a muted role (if you haven't already). a?setrole muted <@role> 2.
Enable some filters. a?automoderation <filter name> status on 3.
Set a new mode. a?automoderation <filter name> mode <warn/mute> 4.
Set a new trigger. a?automoderation <filter name> trigger <number> 5.
Set a new mute duration. a?automoderation <filter name> mute-duration <duration-in-minutes>