This is my msRTCSIP-GroupingID editor. I use it to segregate addresslists in Lync solutions. It takes a commaseparated text file containing Company name and GUID for the addresslist assigned to this Company (filename : groupingids.txt) sample:
I have placed this file on the Lync share for my own convenience. Powershell script Groupingeditor.ps1 loads these values to a listbox. It let you search for users and then apply the groupingID to the selected users.
Next Version will contain possibillities to select entire OU’s and list users containing a spesific GroupingID.