How do I fold and unfold my knee walker?

Foshan HCT medical is a manufacturer specialized in knee walker scooter. Many knee walkers are foldable as below showed:

Step 1. Align and straighten the steering colum frame to the erect position.Slide the locking pin to the side.this allows the steering column to reach its full upright position.Release the pin to lock the steering column in place.

Step 2. Move locking pin into the groove on steering column. Then, depress the locking handle to secure the steering column.

Lock the second locking pin on the center frame using the same method from steps 1 &2