Collections of physical or virtual machines are managed as a single entity called a session machine catalog. Many deployments create a master image or template on their host, and then use that in the machine catalog as a guide for Citrix tools (such as Machine Creation Services or Provisioning Services) to create VMs from the image/template. A catalog can also contain physical machines.
After you create a machine catalog, tests run automatically to ensure that it is configured correctly. When the tests complete, you can view a test report. You can also run the tests later on demand from Citrix Studio site-name in the Studio navigation pane.
After the tests complete, create a Delivery group.