The disclosed embodiments provide devices and methods for movably connecting module layers of an electronic device to discretely actuate a first predetermined operational mode while locking out other predetermined operational modes. In one embodiment, for example, an electronic device includes a first module layer movable in a first direction and a second module layer movably connected relative to the first module layer. Further, a third module layer is movably connected relative to the second module layer and movable in a second direction. Additionally, a locking member is engageable with the third module layer to prevent movement in the second direction during movement of the first module layer in the first direction. The locking member may also be engageable with the first module layer to prevent movement in the first direction during movement of the third module layer in the second direction.