Gap between page numbers

Hello everyone,

I want to have gaps between my pages so I can add pages afterwards without moving other pages. But I can not get it to work.

This is what I would like to have:
0 frontpage
1-10 index
100-200 main power 400V
200-300 24VDC circuit
300-400 PLC
etc

I could add blank pages but that is not the work-around I am looking for.

Is there anyone who knows how to do this in a good way?