Scaling MU and PU for Individuals

Hang the bottom of your gymnastics rings right at your outstretched finger tips. [Assuming you've got overhead clearance*]

Position the squat rack directly under the rings

Set your J-Cups at shoulder level to start

Our resistance bands stretch perfectly between the J-Cups.  Use that band as a platform for your feet or knees.

To increase the amount of assistance, either add bands or raise the level of the J-Cups.

http://hammerheadfit.blogspot.com/2013/12/jumping-muscle-ups-best-progression.html

Excellent technique for scaling for garage gym folks.