Enable-QasUnixGroup : Access is denied

Hello.

I am trying to run the command Enable-QasUnixGroup (part of the Quest.AuthenticationServices powershell module) and receiving the error "access is denied". The group I am running it against was created by the same account I'm using to run this command. I am unsure of what additional permissions may be needed or what other things I should check. My company apparently does not have any documentation on any internal setup relating to this, so I've just gone by the documentation, which is "Enable-QasUnixGroup -Identity 'group_name_here'"