I'm trying to  export an org-file to a beamer presentation. I would like to divide a frame into two or more frames. 

Suppose I have this org-file:

* Heading 1

** Subheading 1

** Subheading 2

* Heading 2

When I export subheadings are shown as blocks and headings as frames.

I would like each subheading to become a frame (but only for the subheadings of Heading 1).

How is that possible?

Regards,

Peter