There are screws under these covers, which need to be removed, as they hold the top plate in place. to do this, you need to take something sharp, a flat edge hobby knife, for example, and pop the cover up out of place in the front end, and then work your way around to the rear of them, once you get to the back, it should pop right off.

You will need to do this on both the left and right side of the drone.

My apologies, the wrong area is in focus in these pictures, but I feel that they can still serve their purpose adequately.