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Navigate to Project settings > Issue types.
Select the appropriate issue type. Use the Search all fields box to find the Checklist Completed custom field and drag it to the appropriate place on the Issue layout. Click Save changes.
Click on the Edit workflow button.
Click Rule.
Select Restrict transition as the Rule type, and choose Restrict to when a field is a specific value. Click Select.
Select the appropriate transition.
Select:
Checklist Completed as the field
Text as the type
Equals as the condition
All Completed as the value
Click Add.
Click the Update workflow button to publish the rule.
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