A tray system has a trunnion carriage mounted to a recess in a housing. A trunnion body is rotatably mounted to the carriage. A push member is slidable within the carriage. Moving the push member from a first end of travel to a second end of travel transfers a force against the trunnion body to move it to a deployed position. When the push member is at the second end then it locks the trunnion body against movement out from the deployed position. Moving the push member back to the first end transfers a force against the trunnion body to move it to the retracted position. A tray coupled to and movable with the trunnion body retracts vertically in the recess when the trunnion body is in the retracted position and deploys horizontally outward from the recess when the trunnion body is in the deployed position.