How do I create a HTML-document and add this to Content?  

An HTML Document can be made and added to content by following these steps: Go to ‘Content’ within a course via the navigationbar.Select the unit where you want to place the HTML-document. Click on ‘Create New’.In the next screen, click on ‘Page’.Enter a title under Page Title and the text under Page Content. You can also choose an existing HTML-template as a starting point. See guide: ”How do I use the HTML-editor?”. Click on ‘Save and Close’ when the page is as desired. 

Under Availability Dates & Conditions, you can add a start and/or end date to the page.