Pull the handle inward to open the bi-fold door.
Loosen the setscrew inserted into the top pivot bracket with a Phillips screwdriver. Slide the door closed, and then pull the bracket out of the track to remove the top pivot.
Lift the bi-fold door up to pull bottom pivot bracket out of the track. Now the door is free from the track.
Turn the hinge screws between each bi-fold door counterclockwise with a Phillips screwdriver. Once screws are removed from both sides of the hinge, place the hinge aside. Now the Marvin bi-fold door is completely loose.
Repeat the process to detach any additional bi-fold doors from the track or other doors.