I am unclear what you are meaning by the toggle to turn the home switches on. Home switches are used to reference your machine by pressing the Ref All button, your Z axis will move first, hit the switch, stop, reverse then stop when the switch again closes and the machine coordinates will be set. Then the Y, then X. You need to have your switches set up in ports and pins and also you may need to define the homing direction in Homing and Limits page.
Hood