In reply to Donald Treadwell.

I figured it out. The slides are placed in the bottom groove that supports them and then tilted into the slot for the upper support of the slide. The slide must then be moved outward to move away from the insertion tab or they will fall out of their support. Check the rotating stops on the extended slides to be sure they are raised to receive the drawer. Insert the slides into the lined up drawer and push the drawer completely into the cabinet. As you pull it back out rotate the drawer stops into position to stop the drawer at maximum extension.