This needs to be used as a /msg command to botserv. The new server code does not support the forwarding alias /botserv. I’m assuming your room is registered. If so then for example let’s say your room’s name is CHATHOUSE and you want to assign the bot nawtyd0g you would type:
/msg botserv assign #chathouse nawtyd0g
That should work.
Nothing rhymes with Cindy Crawford after 9 coronas...