PGM FILES USING 4 BANKS, CAN A PAD HOLD MORE THAN 1 SAMPLE?

I'm trying to figure out if I load a PGM file and for example the file is strings and all 4 banks load up string samples (so no vacant banks) how could i go about loading some drums? Would I have to overwrite some string pads and make them drums or is there another way I haven't figured out yet?

You can make a new program, (in mode:program) and then load up your sounds there and sequence them on top. Also, you can put up to 4 sounds on one pad, but they all play at once, so it's best for layering drums and such (that's in program:sample assign - it's the L1/L2/etc...)