Deleting some sites from a group

Q: How do you delete a few sites from a group reservation?  For instance, a group books 6 sites, but when it is time for a deposit only 4 sites need to be reserved.  How do I now release only the 2 sites back into available sites.

A: Go into Reservation Details for each of the sites that you want to release.  Check the "Canceled" box in the upper-right status area to cancel it, and then make sure you answer "No" if it asks if you want to keep them synchronized (otherwise it will cancel the whole group).