FreezerPro

I would like to be able to group freezer groups. I look after freezers on multiple floors, for multiple groups, and multiple campuses / sites. It would be useful to be able to have groups of freezers within groups of groups. E.g. Institution>Campus 1> Building 1> Floor 1 Freezers; Institution>Campus 3>Building 2>Floor 3 Freezers. 

Being able to group groups of freezers would make it easier to restrict access (e.g. User group for Campus 1; User group for Building 1 Floor 1) and make the general side bar appearance less messy and overwhelming! This assumes the idea for adding access permissions by Freezer Group is built.