How to assign a perimeter to a policy?

There are 2 solutions to assign a policy to a perimeter.

Organization tab

Organization > 🖍️ Edit perimeter (💡pass the cursor over the perimeter) > Policies > Add a policy 

Policies tab

Policies > Associate policy > Select the policy > Add perimeter or groups of perimeters.

To delete an associated perimeter you can clic on the cross at the end of the ligne.