Hello, 
After reading about patch deployment with Desktop Central I have the following questions:

1. Define "Refresh Cycle" - When Desktop central scans for patches?
2. Define "Deployment"? - Patch downloaded and installed?
3. Do Distribution Servers hold the actual windows updates to update machines in a remote office, so the updates are only downloaded from the internet once? If so, can I change where those updates are stored on the Distribution server?
4. Is a test group only available when I have manual patch approval enabled?