A Use Case model can be developed by following the steps below.
1.Identify the Actors (role of users) of the system.
2.For each category of users, identify all roles played by the users relevant to the system.
3.Identify what are the users required the system to be performed to achieve these goals.
4.Create use cases for every goal.
5.Structure the use cases.
6.Use <<include>>,<<exclude>> relationships based on the requirement.
7.Prioritize, review, estimate and validate the users.