Are you performing as a duo? Is this a duo that will last forever? Then you can add the duo as the artist in the Amuse account. If it isn't, there are a couple of prominent stores who won't accept the release.
If it is two separate artists working together on a project or two, we need to change it as only one artist name can be on the account.
This is how you do it when you have separate side projects and are not always a duo:
You start an account with only one artist name, make an upload and add the second person (not on the account) as a featured artist but add PRIMARY to the name. We will then add it as primary as it can't be done in the app.
Artist: Rihanna, Featured artist: PRIMARY Drake = Rihanna and Drake
More than one person can access the new account by signing up with a Google Account that you both have access to, or by signing up with email and sharing the password.