Dennis Genpo Merzel Roshi, one of the preeminent Zen Masters in the Western world, has developed a unique and revolutionary approach for transmitting the authentic teachings that emerged from Buddha's enlightenment experience. With a mastery born of more than thirty years of teaching, Genpo Roshi has enabled thousands of participants in Big Mind workshops to gain profound insights and taste for themselves the illuminating experience from which Buddhism and all the world's great religions originate.

Please bear in mind that watching the videos is not enough for you to facilitate people and groups. Due to the depth of this process, one would have to train under Genpo Roshi to become a facilitator.
You can find more information about this on the Big Mind website.