In the General Settings section, you will find just one option labeled Disable Push Notifications.

Checking this box will disable all push notifications across your app. This means parents will not receive notifications on their phones when you publish new content (This includes any scheduled posts that were created before the settings change).
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We do not recommend turning this setting on.
Instead, if you would like to post specific content without sending a notification, simply uncheck the 'Send Mobile Notification' box when in the notice/event editor.
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​For more information on publishing notice, click here.