How do you properly screw on couch legs to ensure stability and support?

To properly screw on couch legs for stability and support, first ensure that the legs are the correct size and type for the couch. Then, use a screwdriver or drill to securely attach the legs to the pre-drilled holes on the bottom of the couch frame. Make sure to tighten the screws firmly, but be careful not to overtighten and strip the holes. Test the stability of the couch by gently rocking it back and forth to ensure the legs are securely attached.