Identify where you wish to install your stadium seats. Position the seats in that location. Take a pencil and trace on the floor an outline of the screw holes in the seats' metal floor mount, which is also known as a standard.
Use a box cutter to cut into any carpet along the standard's perimeter. Remove the carpet section once it is cut. Repeat step 1, using a pencil to mark the screw holes in the standard on the floor. Move the seats away from your floor markings.
Drill each of the points that you marked step 1 and/or 2, using a 5/32-inch drill bit for soft wood flooring or a 3/16-inch drill bit for hard wood flooring. Clean up the dust from the drilling.
Move the stadium seats back to their earlier location, positioning the screw holes in the standard over your newly drilled holes in the floor. With a Phillips-head screwdriver, screw 1/4-inch and 1-3/4 inch hex head sheet metal screws through the standard into the floor and tighten.