Here's one way.
Make the change you want - ie apply the preset to an image. From the Develop view, select the images you want by clicking on a range from the filmstrip on the bottom (or, edit, Select All works). Make sure the right panel is open and once you select a range of images, you will see a "sync" button on the bottom right, click that and you can select which settings to apply across the range selected.
You can do something similar from Library, but you need to be in the grid view.