The relationship between a music creator and AllTrack is on a one-to-one basis, therefore each member of a band or group should register for their own free AllTrack creator account.
This direct relationship allows AllTrack to pay each creator directly, thereby relieving bands/groups of any headaches of having to manage collections, accounting and then disbursements among other band/group members. As an added convenience, song registrations only need to be made by one member of the band/group, for them to appear in each AllTrack member's account.
You can register for a free AllTrack creator account here.
You can log in to your AllTrack account here.