Updated: Oct 29
Gluteus, Maximus, Medius, Minimus
A lot of intimate things going on here. The Deep Six are involved with many hip movements and can be targeted at the lower medial area of the buttocks. While, the Glutei can be pinpointed all around the "drape" of the hip crest(the posterior ridge where the muscles originate). Scrubbing up along the spine, you can access the erectors and Low Back.
Using a firm wrist, make a motion that moves or scrubs across the body left to right as shown by red arrows in the images.