The lesson text says: Approach Save the rule into the 01-01-05 ruleset version and fix the defect. The rule is automatically checked out when it is copied into the 01-01-05 ruleset version. This is a setting on the operator preferences (Operator Menu > Preferences). Verify that your fix works and check-in the rule.
Where is the Operator Menu/Preferences dialog? I can see Designer Studio->Org and Security->Organization->Operators but there is no Preferences dialog and I cant see the option mentioned in the lesson text.