To create a new schedule, first click the Training button on the Squad screen. You will see some schedules already set up. You can either use these and adjust them as you require or click on the Schedules drop down menu and select New > Full-Time Schedule...

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Next, give the schedule a name. For the purposes of this guide, we’ll create a schedule for "Tackling", and use that as a title.
Tackling is the skill of winning the ball from an opponent on the ground without fouling the opponent or causing injury. It doesn’t require any Attacking ability, Shooting or Set Pieces (penalty taking, free kicks, corners and throw ins) so these can be set to None in the Schedule planner on the right of the screen.
What tackling does require however is Strength, Aerobic, Defending, Ball Control and Tactics – the latter vital to ensure your players win the ball in a position as far away from your goal as possible.
Each of the sliders alters the degree of the training from None through Light, Medium, High and Intensive. Intensive training should be avoided where possible, certainly for long periods of time, and the overall Workload can be controlled from the last slider.