I would probably use a checklist (B), because the order in which you complete items on a checklist does not really matter, just don't forget to check them after completing them. A diagram might also be okay, but it depends on what it shows.
A checklist is a kind of job assistance that includes a list of tasks to be completed like a "to-do list" that helps to reduce the scope of failure by ensuring consistency and fulfillment. It assists to compensate for the probable limits of human memory and attention by ensuring the completion of the task scheduled or documented. Thus, the checklist would most likely be used to complete a list of things before the next meeting without any fail.
