You can set up royalty splits from the ‘Royalty Splits’ page to any of your active releases, you can even set it up as soon as a release has been uploaded (the release doesn't need to be live in stores in order to set up royalty splits).
There are no limits to how many splits/receivers you can set up for a track. The important thing is that everybody's share adds up to 100%.
Once you’re signed in to your account, go to the ‘Royalty splits’ page and search for the release you want to add splits to. You will then get the option of setting it up on the full release or individual tracks.
To add a collaborator, all you need is their email address, so make sure you have it ready when you’re setting up the splits. You will also need to add, in percentage, how much of the royalties this person is receiving.
When you’re done adding your collaborators/split receivers, they will be sent an email informing them that they have been invited to share royalties. They will then need to take action for the splits to be activated, until then their shares will be assigned to you.
Please keep in mind that royalty splits can only be set up via the account that uploaded the release, and setting up splits can currently only be done via the ‘Royalty Splits’ page. For your collaborators to receive their money, they will need to add bank account details via their own RU account. Please check out this article on further info how to pay out royalties.