The Project should be enabled for the Task Assignments.
The Projects that have the Start and End date along with the "Managed Project" check box enabled show in the Gantt chart for Task Assignment.
To create a Project,
- Click the New button, in the Project tab,
- Add the Project Name, Start and End dates, and enable the Check-box "Managed Project"
- Click the Save button
If the Project is already created and you don't see it in the Project Management module. That is because the Managed Project Check box is not enabled for that specific Project.
From the edit page of the Project, enter the Start and End date and enable the Managed Project check box and save it.
The Project is now ready for assigning Tasks.