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Key points to note are:
Interactive media cannot currently media can be published into an Echo360 class, they must be embedded a Echo360 section or embedded directly into Moodle using the Echo360 plug-in available in Moodle's text editor. The tool, highlighted in the image below, gives access to a user's Echo360 personal library where their interactive media are stored. Note this tool is only available in Moodle's default Atto text editor if a user has changed their editor preference in their Moodle profile, they won't see the tool and will have to (temporarily) change their editor preference in order to proceed.
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