Can some one outline the correct procedure for using effects with Gigastudio.

For example:

Port 1 Channel 1 - Piano
Port 1`Channel 2 - Strings
Port 1 Channel 3 - Organ

How can , say, put reverb on Piano and Strings, and Chorus on Organ.

If I set up a reverb and put in on a track using the midi mixer it is appearing on every track.
The same is happening if I apply modulation on to a sound - the other sounds get the modulation too!.

I have a P600 128 RAM SBLive Drive II