View Callgroup and Pickupgroup list

Over the years I’ve set up quite a few callgroups and pickupgroups for small clusters of extensions.

I need to set up another but realised that I don’t know which groups are used. I don’t want to add an extension into the same group as someone else.

Is there a simple way to see a list of all callgroups and pickupgroups and what extension is in which one?

This would save time in having to go through each extension to see what the highest number is.