Egregore can be simply defined as a collective of a similarly situated, talented and skilled people. In some way it can be called as a group of like-minded people. But it is more than that. In the subtlest sense it is a level of feeling, intuitive action and inner condition. When a group of people are in the same frequency of thought and understanding, communicating and working together become much easier. More is accomplished with less – less instruction, less deliberation and less energy spent.
In Sahaj Marg, there are varying degrees of Egregore. One degree is reached when a certain number of aspirants reach a level of consciousness, say a point of no return. This could be when we reach pind pradesh, or mind region or the point of liberation. But those who have reached this state continue on to the next level of Egregore, say entering the central region, or a state of super-consciousness.
Egregore can also be understood to cause an escape velocity of a movement, or an organizational evolution. So, a certain number of aspirants is needed to form the Egregore.
What is that number? Is it a percentage? Or is it automatic. Once the group is formed, things begin to happen that never happened before. The ease with which work happens makes us wonder, and we ask, what changed? Results begin to show, and we wonder what we are doing differently.
Master Chariji gives the example of churning buttermilk to make butter – all of a sudden, butter forms.
To liken Egregore to freemasons, cults and rituals is a serious mistake. There are so many conspiracy theories about freemasons. It arouses our curiosity, but to what effect or benefit? Suffice it to check out https://en.wikipedia.org/wiki/Masonic_conspiracy_theories
So, there is a paramount need for correct thinking, which leads to right understanding. Correct thinking comes when the heart’s intentions are pure. With correct thinking and right understanding, we lead a life of positivity and in tune with Nature. This opens us to realizing and imbibing higher principles of life. The current Master of Sahaj Marg, Shri Kamlesh D. Patel has emphasized this aspect of "Correct Thinking and Right Understanding" and how they are essential in our lives.