The OAM file that you would publish is packaged HTML5 content. When you place the OAM file and export with in5, that content appears in a iframe.
You'll need to add custom code to make your embedded OAM content reference the objects in your main document.
If you're not comfortable coding, it might be easier to make the shapes, the buttons, and the content that appears when rolling over or when clicking the buttons all in Animate, publish that content as an OAM file, place it in your InDesign layout, and export with in5.