Tom isn't available now. So, I will assist you if you would like.
The unit you put over the range needs to be an "over-the-range" microwave. The minimum height should be 66" from the floor (or 30" from the range top). It can be more. However, it should not be anything less.
You also need to have a kitchen cabinet above the range that it will connect to. There also needs to be an outlet inside the cabinet so that you can plug the microwave oven in it.
Please let me know if you would like more information and/or clarification.