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.