If I understand your question correctly, you are using the "Laminate Analysis and Equivalent Orthotropic Properties" form and want to be able to see laminate properties at different temperatures.
This is very easy, simply type in your target temperature in the box that says "Ref Temperature", press enter, and that temperature will show up in the list of reference temperatures. You can then just click on any reference temperature and HyperSizer will interpolate to find material properties for your two materials and then calculate laminate effective properties at that temperature. (see attached picture)
The instructions that James was describing below only applied when the laminate is used on the sizing form as part of a panel sizing.
Let me know if this helps.