Explain the Air Starter Operation Methodology-Sequence, how the air flow and what dose it work in simple way.

Air Starter Operation Methodology-Sequence

This project is a group work and my part will be Operating methodology (sequence) the highlight part in the attach file.
Air distributor-

(air starting system for a medium sized low speed two- stroke diesel engine)
write how the air flow and what dose it work in simple way. in built point
I’ll attach a simple of how to write it someone else has done it for me but it was wrong because the figure was not the one for my project.
I’ll attache the figure that i want you to explain the Air Starter Operation Methodology-Sequence for
no introduction is needed
reference is needed