Renaming Custom Instruments in GB IPad

I've been trying to save some custom settings on an instrument I edited in GarageBand.

I want to save the edited instrument as a new one, but I don't know how to do it.

I do know how to rename the track that they control, but not how to rename the instrument itself so it becomes it's own instrument rather than just being "Custom".

I want to do this is because when I change the Reverb and other options for a custom instrument, it changes it for ALL custom instruments rather than only that one instrument. If I could make it its own instrument, then when I change the Reverb and other options, it shouldn't change for all of the rest of them...or I would hope so.

Please help me out if you can!

I have iOS 9.3.4, and it's an iPad Air. The GarageBand iPad version is 2.1.1.

Thank you for your time.