A mounting system that includes a second frame assembly movable relative to a first frame assembly and including a first and second hooks that engage/disengage first and second openings of the first frame assembly to secure the mounting system in a position; first and second release members configured to move the first and second hooks, respectively, to engage/disengage the associated opening upon movement of the release member; and a linkage assembly configured to communicate movement of one release member to move the other release member. The linkage assembly including a first link member operatively coupled to the first release member, a second link member operatively coupled to the second release member, and a third link member coupled to the first and second link members, such that movement of one of the first and second link members moves the other of the first and second link members.