Add a category to the project

When creating a project you get to assign a category to your project. Once you have named your new project and clicked next this menu will allow you to choose the correct category for your project. 

If you wish to change the existing category of a project or of the new one you just created, whilst in the project editor you can do so. In the bottom left corner of the screen is a button labelled Category Selected

By clicking the button, it will open the category menu and you can add new categories or remove the existing categories assigned to the project.