I just finished the testing time and decide for the free version.

Now I just have only my AD-useraccount left in the user-administration.

I want to add the domain administrator also as admin for desktopcentral.

That's impossible, because after clicking "add user" an error appear: 

" Licensed user limit reached.  Buy additional user licences."

I found no comment about a limit of administrating users in the free editon. Just the 25 computers.

Have I something not read?

The pricing-page also has no entry for to buy an administrative-user entry.

Greets

Manuel