The notification center on the Mac is a one-stop destination for all notifications from your installed apps. But sometimes it can get a bit too much. Here̵
With the notification center in macOS Big Sur or later, you can ignore a single notification or clear all notifications from a single app. There’s also a hidden feature for clearing all notifications that only show up when you have more than three app notifications, and you can expand the notification center.
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To open the Notification Center, click the Date and Time button in the menu bar (next to the Control Center).
To clear all notifications from a particular app, hover over a notification and hold your cursor over the “X” icon. Click on the “Clear All” button that appears.
To expand the Notification Center (if you have notifications from more than three applications), click the “More Notifications” button.
Now you will see the comprehensive notification center. Select the menu button with three dots here and choose the button “Delete all”.
And all your notifications just disappear. When you return to the notification center, you will only see your widgets.
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