Out of the binder, into a system. Anyone can run it.
The operation one person understands, living in a binder and a head. We turn that tribal knowledge into a system anyone can run, with checklists and runbooks that execute instead of getting remembered.
The process works because one person remembers it. That's the risk.
Written once, updated never, correct in the parts nobody needs. The real process lives in someone's head.
When they're out, work slows. When they leave, the process leaves with them.
Steps get skipped on the busy days, which are exactly the days they matter.
Checklists that execute
The tribal knowledge becomes a system anyone can run.
Checklists and runbooks that execute instead of getting remembered: the system does the routine steps, prompts the human ones, and records what happened. This gets more from what you have: the operation stops depending on one memory, and new people run it right the first week.