Normally on the right hand side there would be a Export and/or an Edit button. But your image has that cut off.
What sort of node is it? And if you click on Customize Page, what is this view called?
You should be able to click on any chart and customize it for what you want to see. HOWEVER, this is a "one - off" sort of thing.
Try creating your own chart by inserting a chart and customizing it from the NETFLOW selections for charts. You may have to go tot he Netflow series of pages to make that happen. NPM really does not have that sor tof "header" on its pages. You might want to suggest that as an enhancement.