Design og multi hole coupler using HFSS

Hi,
Iam new to HFSS software. I have to design a multi hole coupler for RF signal of 42GHz and transmission mode is TE03. The specifications were:

Transmission mode: TE03
Frequency: 42GHz+/- 0.5GHz
COupling= 40db
directivity= 40db
Input power is 200kW

Can anyone please help in giving steps or examples of similar design please....