Via the new UI in GAT+, it is now possible to export all your Google Groups including the full property list for each group. Open the exported spreadsheet, change any collection of properties ‘in bulk’, then using the Groups import tool, bulk change or update all the groups and group properties at once.
This is a powerful feature for bulk group management, in particular where you need to close down a particular access point.
If you want to add a new group, simply add a new record to the spreadsheet and leave column “ID” empty. If you want to delete the group, remove ID from “ID” column and change the value of “DELETED” column to “Yes”.