Custom hyperlink in Clinical Viewer (CV2)

What's a good way to add a custom hyperlink to a table item in Clinical Viewer (CV2)? I am customizing the Diagnostic Studies page, and have a custom transform that returns the HTML code for the hyperlink. The hyperlink is supposed to open a custom CSP page in a new window or tab.

Using the layout editor, I then tried adding several "items" to the table like an Icon or External Viewer Link, and use the custom transform to get the hyperlink, but these items only show up as plain text and do not link to any page. How do I turn these items into a hyperlink?