Choose one real workflow
Use a real recent job rather than a theoretical process.
Create five columns
Stage; current owner; information needed; system or location; trigger for the next action.
Mark waiting and duplication
Highlight every wait, repeated data entry, unclear owner and place where someone must chase another person.
Add exceptions
Write the three most common cases that do not follow the normal path.
Choose one repair
Fix the hand-off with the highest combination of frequency and consequence before changing the whole stack.
