microwave office question

Dear roommates
I'm going to design some LNA.In Γs plane I plotted the values of Γs that produce the desired noise figure and gain.I'm going to find the mapping of the point in Γs where both noise figure and gain is satisfied in ΓL plane to check for stability.
would you please help me with introducing some function in microwave office?
thanks in advance

ok
would you please describe the pricedure of LNA design in microwave offic?
I think this question is more general but maybe can solve my problem.
thanks in advance again