So I finally updated my P3 and took it out today. Flew great was steady as a rock. so i went to flip it into F mode. that worked good and the menu came up to activate a mode. i picked follow me first just to test things out. i walked out into the field and picked to follow the RC. an error came up saying GPS lock needs to be off. confused i went out of it back to P mode and then back to F. menu came up again and then decided OK lets try Point of Interest mode. i set my case in the field and point the camera at it. the menu comes up to start the circle and to select the speed. but i go to move the slider and it was greyed out??????? What am i doing wrong here? what am I missing?