All four most common dependency types are supported:
1. Finish to Start (FS) – Ex. Fill the car up, before going on a road trip
2. Start to Start (SS) – Ex. Excavation must start, before you start laying pipes
3. Finish to Finish (FF) - Ex. Paving must be finished, before line painting can be finished
4. Start to Finish (SF) – Ex. Parents must return and start taking care of their children again, before babysitter is allowed to finish the job and leave.
How it works:
Identify the task which deadlines shift influences the other tasks execution. Set dependencies between them. In this case you can shift the dates of the main task and dependent tasks dates will be shifted automatically.
How to set tasks dependencies
If you point the mouse cursor to the task block in the Gantt Chart, you will notice 2 circles by each side of the task - in order to set the dependencies click on one task Start or End Date & drag it (so that a dotted line will appear) to another task Start or End Date.
In other words the task which you drag the line from is defined as primary (main) task, and the task which has the line dragged to becomes dependent. If you shift the dates for the main task, the dependent task dates are shifted automatically. But, if you shift the dates of the dependent task - it won't influence the main task dates.
In order to delete the existing dependency - put the cursor on the dependency connection & click Delete: