The records that matter
What is the most basic unit of organisation for the people you work with?
It's not hard to spot.
Follow someone around, wait until they reach a point where they can no longer remember the things they need to do, at a sufficiently useful level of detail - and watch how they respond to that.
Spoiler - they'll record something, or they'll resort to information that someone else has recorded for them.
It's how they organise themselves - and often how they manage their anxiety about being effective in their job.
Those are the records that matter to people.