password on an imovieproject

Hello

I'm working on a school, where the kids are creating films i imovie on ipads. We only have a small number of ipads, which is why the kids are working on many different project at the same time. Some times it has happend, that they have accidentally made changes in someone elses project.

So... is there some how a way to passwordproject the individuel projects in imovie?

Thanks