normal page as subpage of category page

Hi all,

I want to make a normal page a sub page of a category page, is this actually possible?

I can make page a sub page of a normal page, and a category page a sub page of another category page.

Because I want to highlight some topics of my posts I want a normal page as a sub page of my category page which has the posts on it.

can someone tell me if there is a solution for this?