Analogue-sequencer

I have a song with 2 parts, each part with 6 tracks and 1 pattern 
per track. Part 2 is simply a transposition of Part 1 (up +5). 

How do I get the two parts to cycle and loop? I've used the HOLD 
PART 1 DOWN AND HIT PART 2 from Paul's guide, but they do 
not continue looping beyond the one time. Is there a way to 
select a number of parts and have the P3 loop thru them?

Is this Playlist and I'm just unable to grasp it properly?

-Jim
 www.touchxtone.com