Since adminmod hasn't been ported yet to Half-Life 2, HM installed a mod called "Beetle Mod", as most of you have seen already. Thing is, nobody knows how to use it.
http://qoda.net/cssource/minimumadmin/doc/
So here is some information on the mod. From what I read on it though, its pretty much a clone of admin_mod until its ported over. Also, it seems that no access levels have been set up yet on the server(correct me if I'm wrong) and low level commands like admin_vote_map, previously available to any client, aren't available to anybody yet until admin accounts are set up.
But at least here is some info on it so you can at least KNOW what to interact with.