Align the toe taps with the outer or inner edge of the toes of the shoe, depending on how you perform. If you perform "wing" moves, align the taps to the outer edge of the toe. The wing move involves scraping both feet out away from the body while whirling both arms in circles. If you only perform "click" moves, position the taps toward the inner edge of the toe. The click move is when you rock back on your heels and click your toes together while dancing.
Make marks on the shoe, with a thin marker or pen, inside the taps' screw holes to indicate where you'll place the screws.
Remove the taps and inspect the markings you made to ensure that is where you want to place the taps. If so, put the taps back onto the shoe. Insert the screws through the holes and screw them in.
Repeat the above process for the heel taps.