Hi @superseani2, it is possible within your own bespoke SDK applications to customise calibration parameters such as multiple calibration points (up to 9). Doing so requires the use of the Tobii Core SDK Stream Engine API for which you can find more information @ http://developer.tobii.com/tobii-core-sdk/#streamheader
However, the calibration process via the Tobii Core Software running in the system tray does not expose the kind of calibration customisation you are seeking. In any event, I hope the above information is of use to you!