DJI Intelligent Orientation Control is a very useful tool which can help you archive that perfect shot or just for getting you out of a sticky situation. Here's a simple guide to how to use it on a Phantom 2 but the same applies to the Wookong M and A2. There is also a useful animated video below to help you work it out.
What to do before flying
Normally the forward direction of a DJI Phantom 2 is the same as the nose direction (the front of the Phantom 2). By using IOC, wherever the nose points, the forward direction has nothing to do with the nose direction. The red and blue arrows on the transmitter are corresponding to pitch and roll operations in the following Course Lock diagram.
In course lock flying, the forward direction is the same as a recorded nose direction as long as the Phantom is in ATTI mode or GPS mode.
In home lock flying, the forward direction is pointing away from the home point to Phantom 2 as long as the Phantom 2 is in ATTI mode or GPS mode and it is further than 10m away from the home point.
When IOC is set and how so manually set it
Video guide to using DJI Intelligent Orientation Control
With this knowledge of the Intelligent Orientation Control you will be able to achieve a perfect shot with the technology that DJI offer.
You need a drone license when you are flying as a commercial drone pilot, ie when you are using your drone for work and money-making purposes. This means, in most cases, you will need to sit the FAA Part 107 test.
You do not need a drone license when you are flying as a hobby and for purely recreational purposes. However, you will need to operate by strict rules. There are plans to introduce the requirement for hobbyists to pass an online aeronautical knowledge and safety test.