You can get notified in the following ways:
SMS
You can set notifications for your events and tasks as well as from the calendar options.
Click Reminders for the event or task.
Select the time interval before or after which you want to be notified by selecting the options from the drop-down list.
The available options are:
Hours
Days
Minutes
On a specific date and time: To be notified on a particular date, select this option. The reminder settings widget interface changes accordingly asking you to enter the date and time on which you want to be notified. You can select the date by placing the mouse cursor on the date text box and select the date from the mini calendar. You can also enter the date in the format specified for entering calendar dates.
Select the mode of notification (Email or SMS Message) in the drop-down list.
For SMS and Email notifications, you need to provide the appropriate phone number and email address respectively.
Note - You have the option to set the reminder in received invitations. When you open an invitation, the UI shows the Reminders option that you can use to set the reminder.