Hi Printnut,
If you go onto one of your Fiery's -> Edit -> Preferences -> Paths -> Default Impose Templates this will give you the physical location of your Impose Templates on that Fiery or Indeed PC / MAC that you have Command Workstation loaded on - you can then copy your Templates across into this location in order to share the templates out across the Fiery's - just be aware that if you have any RIP's that does not support "User Defined" in the Finish Sheet size - these obviously will not show .. hope that helps..
Remember you are what you eat ! I'm a twix..