Accounts on KelownaGigs are pretty flexible; you can create one with (pretty much) whatever username you desire. The intent however, is that your account represents you as a person (think Facebook, not MySpace). Artist listings for both individuals and groups are separate from your user account (again, think of Facebook Pages, not MySpace artist accounts).
In order to make this more sensible, I have implemented a new stage of permission control. Previously, only the creator of an artist or venue listing was able to edit that listing. As of about an hour ago, there is a new field when editing either type of profile to list other users who should be granted access to edit the same profile. This way you can create a personal account for yourself, and then add your band members or staff's accounts to your band or venue's profile.