A technique Q: Narrow stereo field

Folks,

What do you use to widen or narrow a stereo field in Cubasis? I’m currently using the Stereo Designer app via IAA, but, one can only apply that to one track at a time and I’ve had limited success then freezing with it in place. Do you have a truer and more tried method that can be applied to different tracks in different amounts simultaneously for stereo field instrument placement?

Kind regards

Derek Jones.