How to add content to any text box widget in your report
Once you've added your text box widget, hover over the widget and click the ellipsis button "..." and click on "Edit".
A WYSIWIG editor will appear.
From here, you can type text, format that text, add numbered/bulleted lists, images, hyperlinks, charts, and more.
Once you've finished editing your text box, click save in the upper right hand corner of the report editor to save these changes.
Note: Textbox widgets have a limit of 5000 characters, including markup. Be cautious of this when filling in your textbox, as anything over the 5000 characters will be deleted upon saving.