To display assets on layers, follow the instructions below:
1. Draw a tag.
2. Select Layer/ Popup in Actions.
3a. Select +Add Popup if there's not an already existing popup in the publication.
3b. If there is a popup in the publication, select it from the "Choose existing popup" drop down list.
4. Click on Create widget, and select an asset from the menu; Video, Gallery (Image), and Webview.