A panel installation support apparatus versatile and convenient for temporary attachment of the panel to a frame member includes an adjustable support surface for accommodating various panel thicknesses, a sloped surface to support the leading edge of the panel when positioning in place, and an alignment support shelf to properly align an edge of the panel with the joist or stud while supporting the edge of the panel. An accessory block may be used when standing a panel against a wall or when hanging drywall on sloped ceilings.