Hey Charles, thanks for your feedback.

I can't set the margins, the thing is I am writing my dissertation and the upper side of the document must have Top: 3cm, bottom: 2cm, left: 3cm and right:2cm, and the back must have: Top: 3cm, Bottom: 2cm, Left: 2cm and right: 3cm... That is defined by a norm and I can't change.

The first 8 pages of my paper is just at the top so it should have the same configuration, all other pages will be top and back so it should be mirrored, If i set in a section on the layout page "different on even and odd pages" can i adjust margins differently?

Cheers.