You can use an existing project as the basis for a Project Model. Project Models can also be created in other ways, but sometimes it is useful to use an existing project as the basis. For more information on Project Models see Working with Models.
Create a Project Model from a project
Step 1. Navigate to a folder, to the section Projects and select the row of the appropriate project.
Step 2. Click on Model, a pop up appears:
Step 3. Enter the objective and click OK, the project model appears on the tab Models.