The purpose of the Pre-Assignment is to get you thinking about the Employee Motivation strategies you are already using and where you need to improve.
A good pre-assignment in this case is to ask participants how they go about motivating their employees at the moment. As well as this, it is helpful to discuss previous initiatives and why they worked or failed. This is best done in small groups, so if the group is large (more than ten participants) it may be beneficial to separate into two or more groups.
Allow the participants to take some time to consider the outcome of the discussion, and to digest feedback from other participants. The subject will be returned to during the day more than once.