Sorry for asking, as I am new to DJI Go App., it sounds silly.
Can someone explain to me what is the small round circle's function, (with Auto label on it) when you press it, it turned blue, when you depress it again it returns to normal.
I tried to find tutorial in DJI, or youtube, but in vain.
Thanks for answering.

Hello.
When you press the screen in the DJI GO App with your finger, a small white dot and blue circle will appear, the circle will move along with your finger while the dot will be like a center point. As you may find, the camera will move when you move your finger on the screen, that's the function of this feature.
Please note that the farther the blue circle is away from the dot, the faster the gimbal will move and the gimbal will always try to move in the direction as the blue circle to the dot.

Thanks.