Supervise and lead team to achieve initiatives

This section is easy if you have taken a "Principles of Management" class at some point. Just refresh some old but key concepts like chain of command and span of control. The span of control is the number of direct reports. This number cannot be very large unless everyone being supervised is a self-starter. The lesser the span of control more layers in the organization and generally slower. You guessed it- in a flatter organizations the span has to be more. It's less about control and more about encouragement and direction.

This gives me a nice segway to motivational theories - there are a whole bunch of them but stay with at least the ones in the text. Try to understand how they work in a supply department and in context of supply management tasks.

Leadership and change management are important topics covered in this section. Try to link your experiences here to the material.

This section needs more thinking and linking with your experience  because the content out there is enormous. There are entire classes in MBA programs on each paragraph - if you have done an MBA and are able to revisit the material do so. Otherwise just stay with a broad understanding and an application approach.