The function of the SMED Quick Changeover Setup Combination Worksheet is to visually represent the two concepts of SMED Setup Reduction, which are internal and external time. This form will allow the participants to separate the two components of Quick Changeover. It provides a graphical representation of these elements, allowing the team to isolate each category and focus on reducing the times in a systematic manner. The Setup Combination Worksheet is essential as it provides an objective analysis of the setup of a machine.