The first step that you need to do is to save your thumbnail files and your larger files for the web. You need to make sure to do this, so your website will load quickly for your viewers.
The next step is drop your thumbnail images on your stage in Edge Animate.
You can then arrange your files in the order that you could like and position them how you want them to look. The neat thing about Edge Animate is it allows you to position your files however you would like and it takes care of the margins and padding. This is still new so if you are working on RWD (responsive web design) then you will need to adjust it more to make your objects flow correctly.