The Venen Engel 12 Premium offers you a total of 8 different massage programs (A-H) to further individualize your massage.
You can find an overview here:
Basically, the selection of the program depends on what you like and with what the application feels good for you personally. The different programs also offer different intensities. Program A, for example, offers a very relaxed, less intense application ,since only one air chamber is filled with pressure at a time. Program B, on the other hand, is more intensive, regardless of the pressure setting, as all air chambers are gradually filled with air until the entire cuff is under pressure.