I am being asked how many Admins are required to maintain a pre-exisiting installation. It's a health care installation, I assume infrastructure and image maintenance, helpdesk functions. Current version of View.
Got a WAG?
There are a number of variables, but 2-3 would be a good minimum. At the very least a primary and a backup. If you are using the Advanced or Enterprise feature sets three admins would make a good start, but you're looking at a lot of moving parts at that point.