A trap preset is a collection of trapping settings you can apply to a page or range of pages in a document. The Trap Presets panel provides an interface for entering trap settings and saving trap presets. You can apply trap presets to any or all pages in the current document, or import the presets from another InDesign document. If you don’t apply a trap preset to a trapping page range, that page range will use the [Default] trap preset.
Double-click the preset.
Select the preset and choose Preset Options in the panel menu.