It seems that this is an excerpt from a project management or operations management problem involving planning and organizing activities for a leadership training program. Sid Davidson has a list of activities, each with specific predecessors, which must be completed before the training can proceed.

The following steps typically apply to such problems:

1. Construct a Network Diagram: Based on the activities and their predecessors, draw a network diagram. Each activity is represented by a node, and arrows show dependencies.

2. Identify the Critical Path: Using the network, determine the longest path of activities, which dictates the minimum time required to complete the project.

3. Calculate Early Start (ES), Late Start (LS), Early Finish (EF), and Late Finish (LF): These calculations help identify any slack time, allowing you to see which tasks must be completed on time and which have flexibility.

4. Determine Project Duration: By summing the durations along the critical path, you'll find the total time required for the project.

Could you share the table mentioned with the activities and immediate predecessors? That would allow me to help you further by constructing the network or solving specific questions related to this problem.

Would you like further details on these steps? Here are some relevant questions that might guide you:

1. How do I create a network diagram for project management?
2. What is the importance of identifying the critical path in a project?
3. How do I calculate early start and late start for each activity?
4. What is slack time, and how can it help in managing project schedules?
5. How do dependencies between activities impact project duration?

Tip: When dealing with project management problems, understanding each activity’s dependency is crucial for managing time effectively.