Can you add a photograph of your driver's license to the driver licenses item?

That page has a graphic which says "1 Password Families 1 GB per person"

I see no ownership info on documents in shared vaults so I'm assuming that 1P doesn't actually have a separate storage limit for each person but instead simply lets a family as a whole use 5GB. So one user could use the entire 5GB Am I correct? My family plan is only using 4 users. Does that restrict us to 4GB and do we have to create a placeholder user to get 5GB?