How to: Add a task to the 'Appointment Book'.
Solution:
Copy the task from the 'To Do List' and paste it into the 'Appointment Book'.
1) Select the task in the 'To Do List'.
2) Select the 'Edit' menu and select 'Copy'.
3) Place the cursor in the 'Appointment Book' on the desired time slot.
4) Select the 'Edit' menu and select 'Paste'. (The task is added to the Appointment Book.)