Basically, you need to perform a number of high neurological load exercises in a workout to increase the body's neurological efficiency. These are exercises which require a large number of muscles in the body, and usually involve some sort of balancing and/or single side activity.
So, this means any exercise which requires an athlete to have to balance, either on a stable or unstable surface. Also, if you work them with one arm (i.e. single arm DB press instead of 2 arms) it will increase the neurological load. And, adding rotation when possible to an existing exercise will increase the neurological load on an athlete. Many of these exercises are described as "functional" in nature.
Keep in mind, though, that these exercises are demanding on the body. So, they need a good warmup prior to starting these activities and they need to be performed early in the workout while they are still fresh. If they have not performed much training in this nature in the past, their neurological system will fatigue very quickly. So, be careful not to beat a dead horse. When they are fatigued and losing control, end it and move on for the day.
Their body will respond very quickly to the training and you should see a fast change in their motor efficiency.