Based on your screenshot preview, I can see that from your Elements panel, you are using an external .html file, correct?
Some in-app Properties are not available for external, non-managed files.
If you create a new project (File > New), for example, add an element you will have full access to Edge Animate properties.
If you create a htm5 doc in Dreamweaver, for example, and open that in Edge Animate then you are limited - because the originating file (.html) is from another application.
Hope this helps, clarify.
Hello. Thanks for the replay. Indeed that page first was created in DreamWaver and then i wanted to modifie it in Edge Animate.
Hopefuly Adobe will improve this.