To organize your files in the order you’d like them to be displayed on the Presentation/Review link, make sure you’re sorting your assets by Custom Sort while you’re on your Project page:
Then drag and drop your assets into the order you’d like them displayed in. Make sure you’re on a Grid view layout. Moving files won’t work if you’re displaying your assets using the List view.
The Custom Sort is the only sort order that will translate to your Presentation and Review Pages.
Once you have your files in the correct order click the Share button on the top right of your screen then click Share as Presentation or Share for Review.