Exact map is another mix type like keystone and curved screen, you can try it out without the dongle but like all mix types it will flash red every so often if the dongle is not present.

To use exact map, set the mix type of the mix to "exact map".
Next build your "map" in the "mix maps" tab in the library window in the HUD.
There are a few presets in there that you can recall to get you started.

Like most of catalyst, learning the software is a small part of the learning process, the big part is learning the best ways to apply the software to what you want to achieve.

I would encourage you to download, try it out and get a feel for it, then come back here with questions, there are many experienced users who have been privately using exact map in beta for awhile now, and they all visit this forum.

There are also Catalyst dealers on here who will be happy to help you out with a dongle.

Paul