Bulk Removal of Users from "Private" Categories

I use "private" categories for many different purposes. Recently, I had occasion to remove several users from one of these categories and found that I could only do so individually via the "Users" setting which is slow and inefficient when dealing with more than one user. 

My suggestion is to add a "Remove" users capability to the "Categories" setting which would work similar to the "Add"  users capability.

Clicking the suggested <Remove> button will display a dialog for me to enter user email addresses for removal.

After entering all email addresses targeted for removal, clicking the <Save> button would remove the targeted users.

***NEIL***