A little help with using the G7 face detection mode, please? When I have set the focus mode to face detection and the camera notices multiple faces, then one face is highlighted with a yellow box and the others with a white box. The face in the yellow box is the one that the camera will try to focus on. How do I tell the camera to change to focus on a different face, one in a white box? I know I can prioritise a set of preregistered faces but that's different. I find it hard to believe that the simple "no, focus on THAT face" use case is not implemented, but "focus on THAT eye" is. I've been digging through the manual to no avail. What am I doing wrong? Thanks in advance.