To open Gantt (Beta):
Task Grid in the left-hand pane is an interactive, detailed list view of your project tasks. Related task information, such as start and end dates, duration, estimated hours and resources assigned to tasks are displayed. A work breakdown structure (WBS) is generated from any existing hierarchy, and updatedThe first time that you open Gantt (Beta) for a project that contains tasks, the WBS column might not reflect your existing hierarchy. We recommend that you save the project before you make any changes. for any changes.
The Gantt chart is an interactive, graphical representation of your projects and project tasks.
Use the zoom slider to change the zoom level of the Gantt Chart between intervals of hours, days, weeks, months, quarters, and years 
The following sections are a brief overview of basic procedures in the Task Grid.
To add project tasks:
. The project task is added to the Task Grid and the name field is editable.You can also change the start and end date, and the duration by moving and stretching project tasks in the Gantt Chart. For more information, see Scheduling Project Tasks.
You can select one or more project tasks and move them in the hierarchy by indenting, outdenting or dragging them to a new location.
To move project tasks, select and drag the tasks to another location in the hierarchy. If you move or delete a parent task, its child tasks are also moved or deleted.
Click
to move your selected project tasks down to the next level in the hierarchy.
Click
to move your selected project tasks up to the next level in the hierarchy.
The following sections are a brief overview of basic procedures in the Gantt Chart.
After you have added tasks in the Task Grid, you can change their scheduled start date, end date or duration within the Gantt chart. This helps you to visualize the details of the project plan when making changes.
is displayed. Press and hold the control and extend the bar to another start or end date.If you want a project task to be dependent on another project task, you can add a link between the task bars in the Gantt Chart. For example, you might want a task to start only when another task has finished.
You can add dependencies between tasks, or between parent tasks and another parent's children. You cannot add dependencies between a parent task and its own children.
To add a dependency:

To edit the dependency type or lagThis term is either a delay or an overlap between tasks in a dependency relationship. According to the dependency type, lag is added (or subtracted when a negative value) to the start or end time of the successor task., double-click the dependency link. The dependency editor opens.
In the dependency editor:
Click Apply or press Enter to apply your changes and close the editor.
You can assign resources, roles or both to project tasks:
. Task Assignment Manager opens.
. The Resource Name field opens for edit. To add a resource, either:
Select a resource from the drop-down list.
To add a role only, or to add a role for the resource, double-click the Role field, and select from the drop-down list.
When you have assigned resources to project tasks, you can link to other pages to generate assignments and resources requests for the project task assignments (PTAs).
To generate assignments or resource requests for PTAs, click
to open the relevant pages:
Assignments or resource requests are created from PTAs that have a role that matches a role on a contact record.
To print your project plan:
. The Print Setup page opens.Related Concepts
Project Planning Methodologies
Managing Project Tasks in Gantt (Beta)
Reference