At first we cleared the build plate after each test and then we decided we were wasting too much resin. Later on we just left the calibration print on the build plate and tweaked the hotspot compensation and reprinted over and over. The print only takes about 5 minutes. Depending on how detailed you want the calibration to be it can take an hour or more to have it perfect. Ofcourse there will always be tweaks when you print parts and for that reason it will also be possible to increase or decrease the full hotspot compensation with the click of a button.
This photo shows that the print was able to use the full projection area, not full build plate, can be used to print items when the hotspot compensation is enabled.