EXS 24 Logic Sampler Users Group

Hi!
Just a question from a new user of EXS.
I know that is possible to load a sample in each channels in the exs.
But is it possible to change the sound/sample/channel from a note to
another?. If i want to play in the same track the first two notes with a
violin pizzicato and the others with a violin short?
How can i do without duplicate the track and using two different audio
instruments?

Sorry for my english and thanks for your answers