How to Create Approval Rules for the leveles of the Society Organization Chart?

Hi ,

I inserted the approval rules in the BPM for cost centers various that belong to referents who must respect a series of levels (this information is available from the Society Organization Chart ).

I insert the screenshots:

How do I avoid entering a list of cost centers?

Considering that there are more than 200, I would like to find a way to respect the levels without listing all the cost centers.

How can i do it ?

Thanks

Michela