My interpretation.
Do as it says: 'join overhead' 2000' qfe, determine circuit direction (windsock or signals square), if circuit is left-hand (default) make your turns to left vice- versa right-hand, descend on dead-side to circuit height, cross the end of the runway (cross-wind ie other end to threshold) at circuit height, downwind, base-leg, finals.
It doesn't matter which direction you join from you're going to ascertain circuit direct etc whilst over-head. This is the theoretical standard over-head join, however a lot of airfields have their own instructions depending on local restrictions in which case you need to consult the AIP or Pooleys etc..