Main Template includes the printing settings inside and the default one can be selected to print your model directly.

Figure 1: The Main Template tab.

Figure 2: How to add slice template.
If there is not template for the selected filament, you can try to Create or Import a new template. And you also can visit Profile Generator to create a basic slicing profile.
See Chapter 5.1.1 for details of Create Template.
See Chapter 5.1.6 for details of Import Template.
-END-