Radiation Pattern, Antenna Polarization and Gain of reflectarry antenna

Hello!
I am designing reflect array antenna in HFSS. I have few questions

1)I have no idea how to determine the CO/Cross polarization Patterns in E and H plane?

2)Also I want to know that how to determine the polarization of your antenna?

3)How to Plot Gain Vs frequency in Hfss?

plzz plzz plzzz need helpp! :(