Mangle starts in Kid Cove, as time goes by she starts to leave there, and she will have two options/mechanics she can follow the main corridor on the camera, and run very fast, and if you don't use the camera's flash light she will kill you or she can choose to go from room to room until the duct, where she will wait to enter the office and you will have to shine the flashlight on her when she leaves she will play a distorted song for a few seconds

She stays in Kids Cove, and if you don't look at her often she starts to leave there, she will leave and play a tense song, where she will appear in the office hallway, you will have seconds to put on the Freddy mask so she doesn't kill you (when I say seconds, it's because it will be very fast, you will have to be agile to win)