Sure thing!
Go into this folder: "Files/entitybank/_markers"
You will see a bunch of files, some related to lights, some related to zones.
Scroll down until you find the following TWO files:
Trigger Zone.bmp
Trigger Zone.fpe
Copy those two files and paste them into that same folder. This will give you copies of those files. Now rename the copies to "My Zone.bmp" and "My Zone.fpe"
Now, you should be able to boot up FPSC, and see your new zone in the marker area of the editor (same place the triggerzone is at).
To give your new zone a "usekey" value, open the "My Zone.fpe" file and you SHOULD see a line in there for "ifused =" that doesn't equal anything. Right underneath that line, add the following:
usekey = NameOfEntity
Save that and your new zone now has a UseKey option set to "NameOfEntity". If you know how the "UseKey" option works (like for doors that require keys) you can now use your zone in a similar fashion, but I recommend using the "anykeywithinzone=1" command with it. Remember, the "key" for your zone must be given the same name that you put into the FPE file (In this example's case, the name would be "NameOfEntity")
Hope that all made sense. Good luck!
(Any of the scripters passing through here, can you please check my file names and folders and make sure they're correct? I don't have FPSC installed to make sure, just running this out of memory.

)
The one and only,
Only those who sow the seeds of their desires will reap their benefits later.
However, I have seeds of my own to tend to. I don't have time to be someone else's watering can.