by adjusting the adjustable hinges on side of sash depending on what hinges u have there will be an allen key one in bottom for going up and 1 in side to go left and right usually covered by a cover cap but if your door has really dropped bad i would suggest re toe and kneel it taking beads out and re packing it o lock side if u never done this bfore i would get a fitter in
chris
July 2010