By default the preload sorts the content types. This works for most users, but sometimes there are situations that requires you to reorder them.
Some parts of your site can get a lot of traffic. In this case, you may want those contents to be cached first. It is possible to achieve this with the new feature. You can re-order the items on the preload wizard. Just drag and drop the item you want. Later You need to save the settings of wp fastest cache.