You need to be far more specific about what you’re trying to do! Otherwise, nobody will know how to help you.
That said, generally you need at least two reference points (or planes): one for the object that you want move, and one or more defining positions to move the object to.
What kind of geometry is your topography? How does it look like? How do you want to orient your object or structure to placed on this “topography”? What kind of grid (square, rectangle, hexagonal, diamonds, etc.) do you want to apply?