Tasks dependencies are the relationships among tasks which determine the order in which activities need to be performed, in other words which tasks are primary and which ones are dependent.

You can set task dependency inside task details form or simply drag & drop dependency line between tasks inside Gantt Chart tasks view.

How to start planning task dependencies

• Identify the main task which dates shift influences the other tasks execution. When you shift the dates of the main task, dependent tasks dates will be shifted automatically. But, if you shift the dates of the dependent task, it won't influence the main task dates.

  One task can be connected to several other tasks. In this case, the system checks if the new connection influences on the existing dependencies. If the new connection logics conflicts with the existing dependencies, this connection won't be established and you will get the following error: "Circular links are not allowed".

  It’s important that you set Start and/or End dates for your tasks if you want to use dependencies, otherwise Bitrix24 won’t let you create them.

  Task deadline shift is not connected with dependencies and is performed separately.

• Specify the dependency type. You need to define how a task influences another one.

  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 to set task dependencies

If you point the mouse cursor to the task bar 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.

How to delete task dependencies

In order to delete the existing dependency - put the cursor on the dependency connection and click Delete: