The Connections Tab of DVDSP 2 displays possible connection on the left side, and possible destinations on the right side of the split window (unless you modify this layout).
To make a connection, just drag a destination from the right side onto the desired source listed in the left side. Possible sources include end actions, button jumps, etc.
To access the Connections Tab, click on an Element in the Outline Tab, shown below the Connections Tab.