You open the New Mobile Project wizard by choosing File > New Project and selecting a project from the Mobile category.
In the More Configurations Selection page, you can choose additional for the project. The configurations are then immediately available to you for testing and compiling your project.
The list of configurations is created from all the configuration templates that have been created in the IDE.
Clicking the Finish button completes the wizard and creates a project you can view in the Projects window of the IDE.