The EC-TRACK is designed to have monitors installed at a specific height and repositioned infrequently. To move a mount you will need to remove the monitor (with the tilter attached), use an allen wrench to loosen the set screws at the bottom of the Heavy Duty Track Mounting Kit (MKIT-F), adjust the mount vertically along the track, tighten set screw with allen wrench and put the payload back on the mount. IMPORTANT NOTE: If you need instant movement up and down, you may look at COMBO2 or install any SERIES-118 monitor arm on an MKIT-F. In most cases the built in range of the arms eliminates any requirement to reposition the mount on the wall track. For low-profile wall mounts with instant vertical height adjustment along a track, please review our Leverlift family of products.