They could only develop into efficient via utkilan or unlocking with entails veneration and worship rituals of Kāla Bhairavaācāra Guru Manḍala. One does the utkilan, abhishincana , tarpan together with other rituals to entry the sadhana techniques of Kāla Bhairavaa by doing the worship ritual of Kāla Bhairavaācāra Guru Manḍala https://worlds-directory.com/listings13204436/facts-about-kaal-bhairav-revealed