Next I decide on how many focal points I want the camera to utilize while trying to track the subject. This can range from:
Single focus point.
The middle point will always be the most responsive and sensitive, especially in lower light, and is good for smaller subjects, or tricky lighting conditions. Make sure to keep that focal point over your subject as you track.
Dynamic/multiple focal points.
This can be excellent for tracking subjects that may be too hard to track with a single focus point (such as erratic movements), or for subjects that are easier for the camera to define in frame.
All focal points.
You can also utilize all focal points in frame. This works well if you have a subject that is quite distinct from the background. The camera should then do a good job of tracking it throughout the frame. This has less specific control over exactly where you are focusing though. Generally it will keep focus on whatever is the most prominent object in frame.