I have a Intellitouch controler that controls my pool and spa and i just added a Pentair Quick touch QT4 remote, When i assign the buttons a function "Heat Boost" is not an option for me to pick! How can i assign Heat Boost to one of my QT4 buttons?

I installed the complete system my self, so im pretty familiar with the different menu's on the control panel. I just cant figure this one out.