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1. Right-click on your BPMN project found on the left pane of your Eclipse window in the Project Explorer and select New → Other. 
   
2. Search or scroll and find the BPMN category under the WSO2 folder, click BPMN Diagram, and click Next.
   
   
3. Enter a file name (e.g., LeaveProcess.bpmn) and select the BPMNProject/src/main/resources/diagrams directory as the parent folder and click Next.
   
   

4. Select a template diagram or create a new empty diagram and click Finish. 

   
   

   In the Project Explorer view, you view the BPMN diagram added under the project you specified and a new empty canvas will open up along with a Palette. You can use the palette to drag and drop artifact symbols to create the desired diagram. 
   

   

5. Click anywhere on the canvas, and click Process in the Properties tab, to change the ID,name and namespace of the process, which will be created once you deploy the BPMN Project.
   

   
   

6. Press Ctrl+S to save both the BPMN Diagram and the BPMN Project you created.

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