Ringing a huntgroup on incoming calls

I'm am trying to get incoming trunk calls to ring a huntgroup the receptionist belongs to instead of ringing the receptionist directly (They want another phone to ring as well). I've got the two extensions in the group, and I've done the #90 group sign in on both phones, but calls sent to the huntgroup go straight to voicemail. This happens both when I set trunk calls to go to the huntgroup and when I call the group extension internally. The only thing I can see anywhere in Administrator (version 5.0A) is that in the extension configuration menu, both extensions still show their status as logout. Any idea how I can get this to work?