Please provide sequence of events execution

Issue in ./help/dev/implement/client-side/atjs/atjs-functions/atjs-custom-events.md
On the AT.JS custom event page one of adobe customer is asking for sequence in which events are firing. If we can provide some diagram or guidance that in which sequence these events are firing so that they can share those details to their internal dev teams to rely on this event to do actions on adobe target experience rendering.

Start with ./help/dev/implement/client-side/atjs/atjs-functions/atjs-custom-events.md and review the existing AT.JS custom-event documentation. Trace the order in which the documented events fire, then add a diagram or guidance that customer development teams can use. Done means the page clearly explains the event sequence for experience rendering.

Written by the indexing model from the issue text.