

The fifth Use Case is Manage Order which is also managed by an Admin. The fourth Use Case is Manage Item, as adding items is the responsibility of an Admin so Managing Item is also part of Admin. The third Use Case is Add Category which will also be managed by the Admin. The second Use Case is to Add Itemthat will be done by the Admin that needs to be taken care of. So, Select Use Case from the left and add it inside the Use Case Subject. As User will First Login and then He/She can proceed to order something. The first use case that is important for an Online Shopping System is Login. You can also change the Actors Line Color by Right Click -> Line Color.

On the left side, pick the Actor Use case and just click wherever you want to add and change its name. So For Online Shopping, There are basically two Actors: Just click on it and Then Make it on the White Side and Give it the name Online Shopping System. The first step to draw a Use Case Diagram for Online Shopping is to Add a Use Case Subject From the left. Step 3: Draw a Use Case Diagram ✦ Add Use Case Subject: You can see on the left side all the use cases of the Use Case Diagram is shown and a whiteboard on the right side. Now you need to add a Diagram from Models -> Add Diagram -> Use Case Diagram. After Downloading, open Star UML and you can see a Blank View.
