As I wrote in this post, to this day the sonar does not facilitate the use of Program / Bank changes.
The constant exchange of instruments into a single track is common, particularly when using samples with many articulations, for example, a violin with a sample to legato, other to pizzicato, one for spiccato and so on.
I need to have Event Manager open, consuming a monitor space that I do not have, just to remedy this limitation.