Heatgain Calculation - Hevacomp

Hello,
I'm currently doing a heatgain calculation in which I am trying got reduce the loads. One way I have figured out is to try and change the UPVC frame to glazing percentage in order to alter the results of the calc. However I cant seem to find anywhere to input this data.
Any help would be greatly appreciated.
Cheers.

Parents
No Data
Reply Children
No Data