Autodesk Revit Architecture

[#1]

I setup my ceiling plan so that I see all of the light fixtures on my sloped ceilings.

But I can't see my electrical switches, why?

I check my VV and the electrical componets is checked for visibility.

What do I have to do to make them show up?

[#2]

Have you checked the View Range? The default RCP Cut Plane is at 7' - 6", which is well above the traditional light switch mounting height. Lower the Cut Plane to somewhere below the switch.