Which WBS elements should ultimately be assigned resources, durations, and logical relationships?
1. All WBS elements
2. All work packages
3. All elements at the X.X level, (e.g., 1.1, 1.2, etc.)
4. All elements at the X.X.X level (e.g., 2.1.1, 2.1.2, etc.)
5. All elements at the X.X.X.X level (e.g. 1.1.1.1, 1.1.2.1, etc.)