Need anybody help to explaint about microwave cavity CST

Hi All Friend,
Who have the experience for make the microwave cavity simulation in CST for how to draw the construction of cavity with have the load inside.Please see my answer in detail in list below.
1/ How to draw the load materila inside the cavity? Must be draw from inside to outside right?
2/ For the frequency that need to specific is 2.45 GHz and excitation by rectangular waveguide .I must be use the waveguide port or planewave ,any one can give me more for detail.
3/ How to know the waveguide mode to be use for example TE10 or TE01 or else due to i found only TE mode indecate in the result.
4/ How to edit the waveguide if i need to add the slotted array or something on the surface of waveguide.
5/ If anybody have some file sample like the microwave cavity simulation would you please help change to me on this board or by e-mail:sacmay@hotmail.com
Thanks and Regards,
PU

Hi,
you should have some basic knowledge about microwave. And you can read "microwve engineering" by David Pozar in detail.