Vello BG-N7 User Manual page 7

4.
To prevent loss, place the
camera contact cover in
the contact cover holder
on the BG-N7.
5.
Connect the BG-N7
grip to the camera,
while aligning the grip's
mounting screw with the
camera's tripod socket.
Removing the battery from
the camera before mounting
the grip is not required.
7
6.
Rotate the attachment
wheel in the direction
shown by the LOCK arrow
until it is firmly tightened.