Thanks for using Apple Support Communities. I see that sometimes when the screen is locked, alerts and notifications don't appear for the Calendar app. I suggest taking a look at the steps in article: Use Notifications on your iPhone, iPad, and iPod touch
Mar 23, 2018 Leave this option enabled so that you can review notifications for app in the Notification Center, even if you’ve disabled alerts for that app. The third option—“Badge app icon”—lets you disable those red dots that show up on dock icons. And finally, the fourth option lets you disable notification. 1 hour ago Here's a quick step-by-step tutorial to cancelling meetings in your Outlook Calendar, using the app for both Mac and PC. Check out the products mentioned in. The Google Calendar app helps you spend less time managing your schedule and more time enjoying it. Available on Android, iPhone and iPad. May 06, 2017 Hi Alex, Regarding your concern with disabling the notification from the calendar, kindly refer to the answer provided by Tony Chen through this link.Also, since you mentioned that you already have your own calendar, we suggest that you remove your shared calendar on your Outlook. Feb 26, 2018 To add the Calendar to your Mac's notification center, click on the Apple icon → Click 'System Preferences' → Click 'Notifications' → Click 'Calendar' → Click the check box next to 'Show in Notification Center.'
, specifically:
Gmail Notifications Mac
Change alert styles and settings for notifications
Customize your notifications with different alert styles so you can act quickly on emails, calendar invites, messages, and more. To add or change an alert style for a notification, go to Settings > Notifications and select an app.
Notifications from apps can have these alerts styles:
Banners: Banner alerts appear at the top of the screen and go away automatically. To reply, swipe down on the banner or swipe up to dismiss it. If you have an iPhone 6s or later, you can respond to a banner alert with 3D Touch. Just press deeply on a banner alert to respond.
Alerts: With Alerts, you need to act before you can move on. Depending on the app, you can dismiss the alert or reply to it.
Badges: A Badge is the red number that appears on an app icon and shows you how many notifications you have for that app.
Sounds: Have an app play a sound to alert you when you receive a notification.
If you don't see notifications for a specific app
To get notifications, connect to a Wi-Fi or cellular network. If you don't get notifications for a specific app, try these steps:
Make sure that the app supports notifications. Go to Settings > Notifications, select the app, and make sure that Notifications are turned on.
If you have notifications turned on for an app but you're not receiving alerts, the alert style might be set to None. Go to Settings > Notifications and check that your Alert Style is set to Banners or Alerts.
Make sure that you’re signed in to your Apple ID. Go to Settings > iTunes & App Stores and enter your Apple ID and password.
Make sure that Do Not Disturb is turned off. Go to Settings > Do Not Disturb and tap Manual if it's turned on.
If you’ve recently installed an app or restored from a backup, open the app to start getting notifications.