This tutorial walks through how to set the microcell location.
INSTRUCTIONS & INFO
Your MicroCell works best within three feet of a window and not in the basement or closet. You will improve the chances of receiving a GPS signal when you install your MicroCell:
On the first floor or above the basement level.
Next to a window with a clear, unobstructed view of the sky.
At least one foot away from other wireless broadcasting devices.