Centered group staff label for violins

Hi all. Is there any way to format my violin staff labels like this picture? Right now I’m faking it with a text frame, but that’s not a workable solution for a 100+ page score.

Doing a 4-part divisi on a single staff won’t work, since I need to eventually be able to separate it out into a Violin I part and Violin II part as well. I’ve also tried fiddling with “group staff labels” but they seem to insist on being vertical.