When you create new tasks using the text field in the Task window, the task is set for a default time and date. To extend the task period from the default amount of time, you can always double click the task and make all the necessary changes there. An easier and interactive alternative is available.



First switch to the DayfWeekfMonth view by selecting View > Current View. Here, you will see tasks as highlighted blocks. Click the outer edges of the blocks and drag it till the time you want the task or appointment to be set.