With a preset you can predefine the settings you need for a print job from USB or an external location.
Print has four preset categories: [Media], [Layout], [Image], and [Finishing]. For each category you can set one default preset in WebTools Express. The default preset is automatically used when you press the green button on the user panel.
You can always find a short explanation of the setting in the tooltip.
Select [Custom] to make your custom preset default.
To make sure your preset is active on the user panel, press the home button on the home screen of the user panel.