GW2 Under New Management jumping puzzle guide with detailed instructions and video walkthrough. Under New Management is a new jumping puzzle in with the Lost Shores update in Southsun Cove (SE corner) (Pearl Islet Waypoint).
How to start
Head to Pearl Islet Waypoint and go into the building with the repair merchant, there is a plank outside you can hop on to start the puzzle. This one is fairly easy.