How do I use a credit artist in a release?

Here's how to add credit artists in the release editor, step 2 "Details":

1. Main, featured, and remix artists: Click the "+" and select the artist. Your own artists appear directly in the list. Contract artists are marked "Contract", credit artists are marked "Credit". You can find artists of other customers via the search.
2. Track credits (composer, songwriter, production, performer): Type in the name. For one of your artists, the artist name is enough. The artist is linked automatically, which you can see from the "✓ linked" note.

Required: The primary artists of each song must include at least one artist from your contract. Otherwise, the release can't be completed.