Add More Instrument Samples To An Instrument?

So, I got stuck last night, dunno how to do this…

I have a long sample I bounced of a bunch of (varying) hand claps. I started cutting them up and making individual instruments out of them, and now I want to put all those instrument samples together into one “drumkit” instrument of my various claps. How to do this???

I’m on a Mac, btw-- some key commands don’t work the same on mac…

HELP!

Try this out first:
http://tutorials.renoise.com/wiki/Instrument_Editor#Instrument_Keymaps