piezoelectric hfss

hi everybody:D
I meet a problem during the simulation in HFSS, I donnot know how to load piezoelectric material in HFSS and hope someone can help me.
Regards and thanks very much!

do you want to change the material properties of one of your components?
or you want to make your own material property for use in simulation?

I am now use PZT-5 in my simulation
I donnot want to change any material properties in my component.
Thank you!

I believe if you have the material properties, you can create a new substrate type