Restore on every boot

We have been using some other software at our school to restore the computers on every boot and we are now looking att CTM. But I am having some issues configuring the software.
What I want CTM to do is restoring on every boot that one i figured out by using a scheduled restore task on startup. What I can´t figure out is that when I as a administrator do som change in the computer that I want to stay I do take a snapshot but how do I tell the scheduled restore task to use the latest snapshot I made? Do I have to brose for the snapshot or is there a way to make the restore to the latest snapshot I have made?
Do I have to reset to baseline on every change I make for example if I run Windows update and so on on the computer?

Check this out. This is designed to accomplish what you are looking for.
http://www.horizondatasys.com/231846.ihtml