Phase Difference Using Ansoft Designer

Hi All,
I am new to Ansoft Designer and would like to get/simulate phase difference between 2 ports (2 and 3, for example) using Ansoft Designer SV.
Phase(S31/s21) = ?

I have read the documentation but, can not find this part.

Could you please help me ASAP?


Thanks a lot in Advance,

Hi,
Phase(S31) - Phase(S21)