This guide will show you how to deploy software update to collection.
1.Go to Deployment management and select Critical Win2k8-Microsoft Update. Right click and select Properties
2. Click on Collection tab and make sure it is pointing to Test Group
3. To start the Patch deployment to your Test Group click on the Schedule tab and select As Soon as Possible, include the Set a Deadline option and Ignore Maintenance options as below
Wait until the patches is deploy to Test Group collection.