If you type a value in the Percent Complete field, Project Plan 365 automatically calculates actual duration and remaining duration. In this case,

• Actual Duration = Duration * Percent Complete
• Remaining Duration = Duration – Actual Duration.

If you type a value in the Percent Complete field in a summary task, Project Plan 365 automatically distributes the Percent Complete for subtasks. The distribution tries to add Actual Duration equally for each subtask which is scheduled as working starting from the Project Start Date.

For more information, please check our Percent Complete online help article.

The Project Plan 365 Scheduling engine works as described below:

1. First Step: Create a graph where nodes are tasks and edges are precedence relations between tasks and do a topological sort to get the order in which we should process the tasks so we calculate early start and early finish dates.
2. Second Step: Create another graph for successors of tasks and calculate the late start and the late finish dates so we can calculate the real start and finish date of tasks and slack and we can obtain the project duration, finish date and critical path with better accuracy.
3. Third Step: Compute other task fields like cost, work and make sure that resource assignments are calculated correctly.

To set a Baseline for selected tasks, first select the tasks (using the Shift or Ctrl keys) then go to Project – Set Baseline. In the Set Baseline dialog select “Selected tasks” and click the “OK” button. This way the Baseline for the selected tasks will be set. The Baseline will be set when you Save your project.

To set a Baseline for the entire project click Project – Set Baseline. In the Set Baseline dialog select “Entire project” and click the “OK” button. This way the Baseline for the Entire Project will be set. The Baseline will be set when you Save your project.