I need assistance finding add-on(s) in the store? 15 January 2016 adrian (0) Click button at the bottom of the list. Then click the Store Assistant button below the product list. Next select the add-on(s) you are interested in, then click X button to return. The Store now shows the add-on(s) you are interested in and any discounted bundles that contain any of those add-on(s). To clear the selected add-ons, access the Store Assistant then click the Clear All button.