Hi experts, thank you all for your inputs. I got the camera to work. But manual trigger using my radio transmitter. I used the CH7 and switch that has 3 options. If the switch stays in the middle the camera is idle, is your push it below the video will be triggered. If push above, it will take a photo, and if you live the switch up it will take a photo every 5 after 5 seconds.
I used the MAIN AUX 8 on the Servo output on the Mission Planner and set it to RCIN7, also enable camera_trigger on the CH7.