Adding "Flag article" in the contextual search results popup from Incident

[gnewuser]

Hi

From the contextual Search results in an Incident, if I click on one of the knowledge articles, a popup window is opened. 

I would like to add a "Flag article" button in the popup. How do I go about it?

I have already searched in the community, either the post is too old or no responses.

I hope I get some help on this.

Thanks