In Enate you can add custom content into your Tickets, Cases & Actions. This custom content is displayed via Custom Cards which can be set to display in the main section of the work item, and also as a section of the side panel on the right side of the screen.
To create an Advanced Custom Card, select the 'Advanced' option in the Custom Card screen. This will allow you to add HTML, Typescript and CSS.
You will first be presented with a warning message highlighting that you're responsible for the errors / unexpected behaviour that may occur from your bespoke code.
You can revert back at any time by switching the customized setting back to off - this will remove any custom code and return the card to its original form.