1. Pick the process
One process, one flowchart. "How a customer signs up" is a flowchart. "How our company works" is a wall of confusion. Narrow scope wins.
2. List the steps in plain language
Write each step as a short verb phrase ("Verify email", "Create account"). Don't worry about shapes yet — just get the sequence right.
3. Mark every decision
Anywhere the path could split, write a yes/no question. Decisions become diamonds; everything else is a rectangle.
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4. Draw it in FlowSimp
Open the editor, drop shapes in order, label each one, and connect with arrows. Keep flow top-to-bottom or left-to-right — pick one and stick with it.
5. Show it to someone
Hand it to a person who doesn't know the process. If they can read it without you explaining, you're done. If they can't, simplify and try again.
Reference
Confused on shapes? See the flowchart symbols guide.