If money is an issue as these days it often times is you can perform the installation yourself.
How to install garage door bolt lock.
Secure the lock to the door and put marks where you will drill the holes.
After you have drilled the holes fasten the lock in place with screws.
Make sure that the there s enough space for the bolt to pass through the rail and for the deadbolt to go on.
This will turn the operating lever and extend the bolt into the locked position.
Once installed turn the handle 90 degrees to lock the slide lock.