To create a model follow the steps given below:

1. Click on the top menu bar : File > New > Other....

2. Choose Topcased > Topcased Diagrams > BlueXML Diagram and click on Next.

3. In the next screen, choose the directory (on our case, it is /Test/Models), the model name (myModel), and the template. The template is the type of the main diagram. With BlueXML Developer Studio you can create four different kinds of diagram: BPM Diagram, Class Diagram, Security Diagram, and UC Diagram. A model can contain many diagrams. After choosing the type of diagram you will need, click Finish

The result is :