Thanks Gallo,
I found, through SigmaSix support, that there are ways of accessing these functions through AppleScript:
"Since version 1.5 you can control ProjectorManager with applescript. You can do that with the Script Editor that is in your Utilities folder.
For instance
tell application "ProjectorManager" to PowerOn 0
will power on all the listed projectors.
If you export this script as an application, you can then schedule the Calendar app to open this script at a defined time (it's hidden in custom alerts, you can make it open a file and just select the script)
You can also set a redundancy so it will happen every weekends or every day and so on."
I am going to play with this and see what I can cook up!