How to Manage Multiple Co-Authors in a Submission

How can I manage submissions that have multiple co-authors, given that only one primary author can be assigned?

In the Dryfta platform, you can add as many co-authors to a submission as needed. However, only one co-author can be assigned the role of primary author per submission. While multiple co-authors can be listed, the primary author designation must be unique to one individual on the submission.