Independent staff signatures- iPad

Is it possible to create staffs with different time signatures on an iPad without a keyboard? I can only find instructions for alt-enter in the meter pop up but obviously can’t do that with just the tablet.

It’s not possible without a keyboard at the moment, no. We’ve been thinking about how we might allow this, and could imagine perhaps adding a dedicated button to the popover (as we have done for those that can be navigated forwards/backwards rhythmically).