A luminaire mounting assembly comprises a mounting bracket having at least one keyed aperture, the mounting bracket having one of a slider assembly and at least one tab, a fixture housing having the other of a slider assembly and the at least one tab, the slider assembly movable between a first fixture position and a second fixture position, the slider assembly having a fixed element, a plunger movable relative to the fixed element, the plunger biased toward a first plunger position and engaging the at least one tab, the plunger movable to a second plunger position to pass the at least one tab.