A knowledge base article about How do I change or turn off Calendar notifications in bCal? provided by the UC Berkeley IT Service Hub - Knowledge Portal
You can get notifications on your phone, computer, or by email to help easily remember events. You can change your settings for a single event, or all your events.
When you get a notice on your computer, you'll get it on your phone.
Note: Google Calendar will always send notification emails to users who don't use Google Calendar whenever an event they are invited to is created, updated, or deleted.