Abstract: Support apparatuses and methods of operating support apparatuses are provided. In one example, a support apparatus includes a support member including a longitudinal central axis extending in a z-direction of a three-dimensional coordinate system including an x-direction, y-direction, and the z-direction, a body coupled to and movable along the support member, and an arm coupled to the body and rotatable relative to the body about a first vertical axis, with the first vertical axis offset from the longitudinal central axis in both the x-direction and the y-direction. In another example, a method of operating a support apparatus includes positioning the support apparatus in a storage position, in which a platform of the support apparatus is at least partially positioned underneath a horizontal surface of a table, and moving the support apparatus from the storage position to an operating position, in which the platform is out from underneath the horizontal surface.