Staff names for players with multiple instruments

I’ve got one player who has a voice staff and a bass guitar staff.

Turning on labels puts a single, vertically-centered name, “Voice + Bass Guitar”

How do I make it so the voice staff says “Voice” and the bass staff says “Bass Guitar”?

I think the Players in Dorico are not supposed to play different instruments at the same time ! Add a bass player and both staves will appear.