Look for repetition
Choose a task your team performs frequently, with information that follows a recognisable pattern. Document requests and inquiry routing are useful examples.
Map the whole journey
Write down the trigger, the information needed, the tools involved and the person responsible for exceptions. Notice where someone copies the same information twice.
Define a useful result
Decide what you will measure before building: time spent, incomplete records or response delays. Compare the workflow against that starting point after launch.