Yeah, Im gonna put together a little tutorial video on it. It's difficult to explain in words but I'll give a brief rundown when I get home and have the machine in front of me.
Have a look at the JJOSXL manual. You will see you can set the pads to different modes. If you are on main screen and cursor to the empty field next to the pad number you can use the jog wheel to set it to a different mode. You will notice you can select pattern.
There are 2 ways to create a pattern. Press record and play pads or Grid Mode and enter notes to create a new sequence. Press Shift and then F1 (to pattern). Save as a pattern.
Go to whatever pad, set mode to the newly created pattern. Now, you may ask yourself why would you do it this way. This where a video is necessary but... Start with the first 4 pads in bank A. Assign some drums... kick, snare, hats. Create 1 pattern with just the kick drum on the 1st beat. On the 4 pads with the various drum sounds set them to pad mode > pattern. On Pads 2 - 4 cursor over next to "TR" and offset the pad by the necessary increments. for Pad 2 it will be +01, Pad 3 +02 etc
The pads will play and loop the pattern for the sound on the pads. Sequencer doesnt have to play. Tempo freely adjustable. You can vary the pattern and swing by the timing you launch the patterns. With higher resolution subdivisions you can get crazy variations.
I went as far as creating dozens of patterns with different subdivisions. You can swap them on the fly. You can also create patterns for sample chops and assign that to a pad. You can then offset chops for variation. Play with Mute groups, pads muting other pads, etc.
I'll get a video together eventually... In the meantime try to get more out of JJOSXL... I switched back from the new machines for good reason.