Sessions tab
The Sessions tab shows all the sessions that Vantage has detected for this asset. Sessions are semi-permanent, interactive information exchanges between two or more communicating nodes.

Columns
The Columns button lets you select which of the available columns for the current page will show.
Live
The Live
                 toggle lets you change live view on, or off. When live
                mode is on, the page will refresh periodically. 
Refresh
The refresh  icon lets you immediately refresh the graph.