[OH3] Per user sitemaps

How can I create sitemaps that are only visible to certain users? I created a user in karaf console, but the “Visible to” field of the pages has just two options:
Users and Admins

Can I somehow create a new role or how do you do it? Will it work with the android app?

No, for now there are just the two roles and you cannot control anything on a user/by/user basis.