Allow multiple pages with same validation and one page with multiple validations

It could look like a silly question, of course I can reuse password for differente pages... but, this is what I'm trying to ask:

Is there a way of "grouping" the protected pages? Like for X, Y and Z, use password xxxxxx so if you enter the password for page X, you will be automatically authorized to see page Y and page Z when you visit them.

And, is there a way to have a permission like "previously authorized" (or something similar)? Like check if the visitor/user has been authorized on page X, then also allows him/her to see content B, so I can use this kind of feature when defining routes on my app (like checking if the user is authenticated).

I categorized this question as Feature request as I can't see any way of configuring what I'm asking for.

Thanks.