Is there a way to change a group of draft documents from available to release at one time?
Only with a macro.
If you do a search for a Solid Edge Status Changer, you might come up with one that still works.
Here's another one on this page:
The program is also attached with this message.
Property Manager can do that (it can't change them back to Available again though)
Just need to display the status column.
Just FYI: There are some tools at this website as well. http://barhamsoftware.com/SE_Tools/index.htm