The WYSIWYG Editor comes with a Code View Function. This way you can leverage HTML coding/script so you can add extra elements in your app's feature (usually the Info-Tier features).
The Code View option :
- supports the use of HTML code.
- it doesn't support the use of Java Script (.js) and Cascading Style Sheets (.css) languages.
This way you can add extra elements that cannot be added by just using the WYSIWYG buttons available.
You can enter the Code View by navigating to the app feature's WYSIWYG Editor and clicking the button as per the screenshot below.
Once you are in you can add the HTML code of your preference. Note that you cannot use JS or CSS.