You can create a task from the Day or Week, Bar or Box view of the calendar. To do so:
Click Jobs from the Navigator bar (the third icon from the top).
Click either the Day or Week button.
Click the Box or Bar view.
Click and drag a box corresponding to the time to which you want to add a task.
Right-click your selection and select one of two values from the pop-up menu:
Add New Task. The Task dialog box appears.
New Task for Group. You can add a quick task for all groups (select All) or select a specific group from the pop-up menu. The Task dialog box appears with the group you selected identified on the Assignments tab. Groups are defined in the Security Options dialog box; see the Managing User Groups section for details.)
Enter the details of the task in the usual manner. See the Creating a Task section for details. Note that the On Calendar check box will be selected by default.
Click OK. The task appears on the calendar.