1. When you link tasks:
Project automatically applies a Finish-to-Start task dependency
The start of the second task depends on the completion of the first task

2. Linking tasks Select the tasks
On the Task tab, click the Link Tasks button
Or:
Press Ctrl+F2

3. Change a task’s predecessor
In the Sheet pane, double-click the task whose predecessor you want to change
Click the Predecessors tab
In the ID column, enter the task ID of the task that you want to set as the predecessor
Click OK

4. Lag time A delay that adds time after the completion of a task
Example: “Install trim”
If you add lag time to its predecessor, “Paint,” the paint will have time to dry before the trim installation begins

5. Lead time
The overlap between dependent tasks (when a task can start before its predecessor finishes)

6. Apply lead time or lag time
Double-click a task in the Sheet pane
Click the Predecessors tab
To apply lag time, enter a positive value in the Lag field for the predecessor
To apply lead time, enter a negative value
Click OK

7. Insert a recurring task
In the Task Name field, select the cell below where you want to insert the task
Click the Task arrow and choose Recurring Task
Enter a name for the recurring task
Enter the duration
Select a time interval
Enter the dates across which the recurring task will occur
Select a calendar for scheduling the task
Click OK