How to Set an Alarm on MacBook

Click the Calendar icon located in the Dock. If the Calendar icon doesn't display in the Dock, click the 'Go' menu, select 'Applications' and double-click 'Calendar.'
Double-click the date that you want to use for the alarm. Type a name for the alarm in the 'New Event' text area.
Select the date and choose the time that you want the alarm to go off in the 'From:' field. You don't need to change the information in the 'To:' field.
Choose the 'Alert:' drop-down menu and select 'Custom.'
Select the 'Message With Sound' option from the first drop-down menu.
Choose a sound from the list of options in the second drop-down menu. Alternatively, select 'Open File' and choose an audio file on your hard drive to play when the alarm goes off.
Select 'At the Time of Event' from the last drop-down menu and click 'OK.' You can also select the 'Minutes Before' option and enter a numerical value to have the alarm go off before the set event time.
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