Seriously, what are you actually trying to do? WHY might your users change
the headers, footers, etc in ways you don't want?

Why they change layout? I don't know it even myself. They just do it. Maybe
because they think it's ok.

What I try to do:

I try to make protected document, which contains fields, where users can
type text. Text can be body text or two different type of heading texts.
Users are allowed to type only to specific areas (in this case text fiels)
and with those styles what I mentioned.

My question was, how can I make this kind of document ?

-Antti