Setting and changing Default Notifications in Google Calendar
1) Access Google Calendar from your Google apps icon
2) Once you are in your calendar, in the top right corner click on the gear icon and then the settings button
3) Choose which calendar you would like to edit under "settings for my calendars." Scroll down to access and change desired notification settings.
4) This will open up a page where you can choose default notifications. The changes will save automatically.
Last Updated: 11/12/15