you can embed content created on another Glow Blog with the H5P plugin. There are more details of how to get the embed code on the H5P example sharing page.

[h5piframe url="https://blogs.glowscotland.org.uk/glowblogs/h5pexamples/wp-admin/admin-ajax.php?action=h5p_embed&id=25" width="1198" height="699" ] give you this:

You can also embed content from an external h5p site, h5p.org or h5p.com by pasting in the url.