Press the two release buttons on both sides simultaneously with two fingers. Hold the top of the frame steady, place your thumb against the back of the frame, then push to open as shown in the figure.

Open the button cover and pass the camera through this gap.

Align the two holes on the cover with the camera joystick and switch button, then close the cover and fasten the latch.

Rotate the frame to switch it to protection mode (Do NOT press the release buttons at this time).