You can change the details of an appointments or task after it has been created. You can also complete tasks and therefore delete them from your Task Sheet.
To change an appointment
Click on the appointment in the Calendar.
Change the appointment details in the window that appears and click Update Entry.
To change a task
Click on the task in your Task Sheet that you want to change.
Change the task details in the window that appears and click Update Entry.
When you complete a task it is removed from your Task Sheet. This is the same as deleting a task.
To complete a task
Select the checkbox next to the task that you want to complete.
From the status list, select Complete. Click Update and the task is removed from the task sheet.