It is my theory, or it is possible that this is, how it works for/within me, but it is, I believe worth thinking about.
Which chackra is the central one? Usually it is said, that it is the third one, as it lies on geometric centre of the body. However I disagree. There are seven chacras and middle number between seven and one is not three, but four. Third chacra, if I remember correct, dispays personality, but fourth is simply center of love, which feels to me to be much more core of the being, center of the whole.
As first and seventh chacras are connected and works together, there are also paired second and sixth, and also third and fifth chacras.
The hearth chacra is the core of being, the centre of love, most basic energy, that defines individual and yet is the same within us all. The lower chacras then describe us on physcal world, higher on non physial.
3rd chacra is displaying individuality on the inside, definition of ourselves, defines our individuality... and the 5th chacra allows comunication, definition of ourselves anomg others.
2nd chacra is of sexuality and more, can't remember now, but on physical world, we can so contact with others on physical reality and with the 6th one on spiritual reality.
1st and 7th chacras are universe and multiverse. 1st allow us to live on physical world, universe, it connects us with it. 7th chacra then connects us with spiritual spaces, realites and alternatives, multiverse...
I hope it makes sense.