I've set up songs on my iPad to have the appropriate scroll lengths to keep up with the lyrics without touching the iPad. I *thought* that my bandmate's iPad would also inherit those settings, but it isn't.
Instead, all her songs from the shared setlist just go to the default preroll and scroll time. When I went in to try to change that for her, there aren't even options for manually setting those presented in the menu. I'm confused.
It sounds like you need to change Settings > General Settings > Auto-Scroll > Calculate Auto-Scroll Duration to Manual on your bandmate's device. Then it will use the manual scroll durations you have entered.