Just position the door jammers at the door of your door and close door firmly.
Ensure the restraints are at a length comfortable for whatever position you are considering.
Can be used to raise a women to be at a comfortable height with her partner for penetration.
Another great idea is for the man to be restrained and at a good level for the partner to comfortable sit in a chair (more comfortable with a chair with arm rests). Then the man can comfortable place his feet and legs on the arm rests. A comfortable way to give a blow job while the man is restrained!!!
You need to use your imagination to create lots of possibilities to use these Door Jammers!!!