As you have read in the Designer Interface section of this Help file, all your configuration is done in the Designer. Therefore the CardExchange® Producer works based on templates.
To understand how CardExchange® Producer work, it is important to take special note of this section of the Help file.
Basically every time you create a new card with CardExchange® Producer or you are creating a new Template.
In the Main Interface of CardExchange® Producer you always switch between the different available Templates (see the "Loaded Cards" section).
With the Designer you always open the selected Template. But it is always ONE Template!
Each Template has always one ID Card Printer connected, one Database connection, one MIFARE® Classic or DESFire connection, one External Plug In, etc.
Each Template can have have Multiple Layouts. In the screen shot you see "Student" and "Staff". These are the layouts inside the template. Each layout can have it's own unique conditions like Magnetic Encoding settings. By selecting the layout, you can simply call the Page Setup window from the Main Menu to set the specific conditions.
This offers very powerful functionality. Using Multiple Layouts inside one Template makes it for example, possible to automatic switch between the different available Layouts within the Template. More information how to create this type of functionality can be found in the Expressions section of this Help file.
More information about Layouts can be found in the "Adding Layout(s)" section of this Help file.