On Triboo, you can add iframe directly from copying and pasting a URL.
1. First activate the iframe component on your course. Go under “Advanced Settings” and look for the Advanced Module List, then tick the “iframe” option.
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2. Go back in your Course outline and in the Unit page you want to add the iframe, click on “Resources” them select “Iframe”.
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3. Click on the pencil to edit the component, copy and paste your
iFrame URL. Then click on Save button.
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4. Do not forget to publish your Unit.