In Avast 4 Pro, can you set the default action to take when a virus is found? Where? I’m not seeing it in any of the screenshots that I find online.
With Pro, can an infected file be renamed but NOT moved, and without use interaction?
Yes you can.
First you need to be using the Enhanced User Interface, which gives you the options you need.
I don’t use the Pro version so I would suggest that you check out the avast help file, Enhanced User Interface section.