I have tried to piece together some of the concepts of the Alexander Material, into one image. The right hand side shows the four bodies, that we require to exist in this physical world. They act like a sort of spacesuit filtration system and allow us, as spirit beings, to operate in a physical, linear time based environment. Above the line are the entities that feed down into this experience (like a pyramid), with Source at the top and our phyical body at the bottom.
On the left you can see Master Events that are preordained in our lives. These are pushed through the Portal and cycle down through our bodies until they materialise into physical events. They exist as potential events up until the last moment and free will can cut this process short at any time. We ultimately choose whether they will materialise into our life path.