It looks like you want to add a second goal to your project. See the screenshot "2 goals, multiple platforms"

At the bottom of the project page, you will see the " Add Target " button (displayed in the screenshot). This will allow you to create a new goal for your project. Both will be available for compilation and launch separately, but they will exchange files.
Alternatively, you can use a workspace with two or three projects. 
One project for each purpose, and possibly one to host common classes. This requires adding common classes to each project. Just drag the container from the project to the other two projects to link the classes.
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