For casual use case descriptions, use the following template Use case number and name Objective Primary Actor Main Success Scenario For the detailed use case description, use the following template: Use case number and name Description Primary Actor Secondary Actor(s) Trigger Preconditions Post-conditions Normal Flows Alternative Flows Performance time Frequency of use For casual use case descriptions, use the following template Use case number and name Objective Primary Actor Main Success Scenario For the detailed use case description, use the following template: Use case number and name Description Primary Actor Secondary Actor(s) Trigger Preconditions Post-conditions Normal Flows Alternative Flows Performance time Frequency of use