There are 3 sets of Kalachakra Empowerments. The first is called the “7 Empowerments of a Growing Child” and is the initiation into the Mandala. This empowerment is given with refuge, bodhisattva, tantric and uncommon tantric vows of Kalachakra. Upon receiving the initiation a student can practice the uncommon preliminary deity yoga of Innate Kalachakra. There is no limit to how many times a person can take this empowerment. Khentrul Rinpoche gives this empowerment publicly and anyone is welcome to take it. It is beneficial to take it as much as you can to help strengthen the karmic propensities with Kalachakra.