Insert magnitude and phase to ports in CST?

i'm having a structure using several ports and i want to assign to each one of them different amplitude and phase. How do i do it in CST?

You can configure amplitude and phase in the "setup solver" (go to simulation tab, click on setup solver)
In the setup solver, change source type to "selection" so that you can customize the stimulation.
Next click on the excitation list, to configure your excitations. Under excitation settings choose sequential or simultaneous. Now you can change the amplitude and phase shift of each signal.