Guidelines for developing networks and schedules
The following sequence of steps will help in developing the project schedule:

1. Identify all major events and dates
   
   
2. Decide in detail the deliverable tasks in a WBS, then develop a network of interdependencies
   
   
3. Estimate the duration of each separate task in the WBS
   
   
4. Use task duration estimates to calculate the estimated project duration
   
   
5. Identify the time constraints and relate each task and major event to the timeline
   
   
6. Identify resource constraints (people, facilities, critical equipment)