How can I change the title of Groups to something else?

Hello!

How can I change the title of Groups to something else?
In this case I am trying to design a file storage system for a client so I want to rename Groups to "User File Directory" or something else I haven't yet decided.

I'm using the groups to serve as top level file drawers for staff members uploading and sharing files.

So on the title User Groups and the Widgets shown how can I rename those?

Thank you!
Joe

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