A question about gm_giveswep

how do I disable Gm_giveswep for guests on my server?
like only superadmins and owner can spawn sweps and sents, if it matters I am using Evolve Admin Mod.

please help D:?

edit: I changed to evolve because AssMod does not work with DarkRP SVN for some reason (on purpose?)
but anyway, all help WILL be appreciated