Rhodes Chroma Polaris

Hi again,
Thanks David Clarke for helping me out with instructions on how to save 
sounds on the Polaris! Most helpful.

Another question I would like to have some help with is how to fatten 
up the sound a bit. I have read the manual but its not the most 
intuitive one I have readf I must say. If I get it I should be able to 
stack sound (or link) so I can play the same sound or a variety of 
sounds on top of eachother (hope my english makes sense here).

A friend of mine playd me some tracks he made years ago made with a 
Polaris and the sound reminded me of a Oberheim Xpander in unison-mode. 
Is there a way to do this with the Polaris through playing 3 different 
or same presets(is 3 the maximum in Link Unison?).

Best regards,
Greg