For the face, both the 2.0mm and 1.5mm probes can be used. The recommended energy settings for the 2.0mm probe are 0.1-0.2J. For the lower face, the 1.5mm probe can also be used with the same energy settings of 0.1-0.2J.
The recommended number of shots per cartridge per arm is 75. When stacking two ways (lateral and longitudinal) for treatment, the total number of shots per cartridge per arm would be 150. The stacking technique involves applying 10 shots in one direction, then stacking another 10 shots in the same direction, and repeating this process for a total of 60 shots.