Difficulty: Moderately Challenging
Step1
Let the person or persons know you aren't interested in them by telling them outright. If they persist in their attention, ignore them.
Step2
Try not to act like you are bothered by their attention. This behavior may be what is motivating their attention in the first place.
Step3
Tell the person or persons you are going to report them to the proper authorities if they persist with their sexual attention. This statement should discourage them. The authority may be your employer, boss, Human Resources Manager, Dean of Students or whatever authority figure handles this sort of problem in your jurisdiction.
Step4
Report the person or persons to the proper authority if they persist in their attention. Follow through with any necessary legal action.