This adapter is non-electronic and so will not enable electronic communication between lens and camera, so no autofocus. 

This adapter is non-electronic and so will not enable electronic communication between lens and camera, so no autofocus. 

No, there are no click stops. Only a hard stop at full open and full close. 

I have come to find out that adapter is not compatible with the nikon d5200 and all things would be done manually 

The adapter clicks on the lens. It has a small dark gray colored lever (not the white plastic tab to change aperture), level to the outer edge of the bottom ring accessible when removed from the camera, grab the whole adapter with your left hand and push the lever in with your thumb, and while pushing, rotate the lens with your right hand to remove it. You need to push in that lever to unlock the lens.