Relationship App: Multiple Relationships/Custom Relationships

Hey there! I run a network where non-monogamous relationships are pretty common and the relationship app from what I can tell only allows one relationship at a time? If I go live with this limitation that could cause some drama where people have to pick and choose who their favourite partner is ahaha is there a way to allow for multiple relationship taggings?

Also, less critical, if it possible to change the relationship types and add/remove types? I assume that would involve diving into the code at this point but would appreciate being pointed in the right direction!