How to set a users default photo, from Admin Panel

Hi Guys,Merry Christmas :)

When logged in as Admin, I can delete any photos that users have uploaded.

But in a couple of cases they have no set a default or uploaded an inappropriate choice.

Is there a way i can put a small piece of code in to fix this?

Admin -> Members -> Select a member -> Click on Photos (green square)->

there you can delete them, I would like to add a small link next to each photo which says "Set as default"  allowing me to change the users default photo as Admin

Can anyone assist with this small crafty piece of code please?

Cheers,
Charisma