Netdata Metric Section - Favourites

Hello,

I am trying to figure out how to add specific metrics/sections to what I see on the netdata demo to be a favorites section. For example, if you open the demo environment, navigate to the CoreDNS room and select the metrics tab, you will see that there is a section titled “Favourites” in the overview area of the display.

My questions is: how do you add a section or metric to the favourites section?