You can add text, images, spreadsheets, symbols, and more to your document.
You cannot embed videos - but you can add gifs
SketchUp models linked to the doc can be set to your SketchUp scenes - we cannot emphasize enough how important an organized SketchUp model is to success in Layout.
You will not be able to play the SketchUp animation, but you can switch between scenes. I would not advise switching between scenes within a viewport during a live presentation. If you wanted to play an animation, I would just jump back into SketchUp, or export a video file to show separately.
Dynamic components cannot be changed in Layout. There is no way to alter/edit SketchUp geometry, but you can change the style, tags, and visual settings.
I would recommend checking this out - Presentation Mode - Let's Talk LayOut