Assign a project to the class
You can assign a project to your class. To do so, follow the steps below. (Note: to learn how to create projects, jump to Creating Projects)
From the Classes area, click on your class to open it.
Click on the Units tab, centre left of your screen.
Click on the blue plus sign, top left of the page, and choose Add Project As Unit.
Select the project you are assigning and select a stack (for more information on stacks, jump to Stacks)