To add a task, you can either click on the Insert
button on the toolbar, or you can right click in the
task area and choose Insert Task from
the pop-up option box.  These options
work the same in either the Gantt View or the Task View.
To add several tasks quickly, choose
ActionsInsert Tasks, which will open the insert task dialog.
This dialog allows quick entry of multiple tasks.  Simply enter the
name of the task and amount of work effort and press Enter
.  The new task will be added, and the dialog will remain
open and ready for your next task entry.  Details can be added later.
The Actions menu is sensitive to the view
you're currently displaying, so if you want to use the insert task
dialog, you need to be in either the task or Gantt view.  It's not
available from the other views.
