In group, if owner or admin of the group want to make a new announcement that all member need to know. He can create a post then pin it. Whenever a post in group is pinned, all members of the group will got a notification.
Go to a post that you want to pin, click on “..” button and select “Pin post”
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The post then will show on top of the group’s timeline like below screenshot
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All group members will get a notification
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Member can disable this notification from group by clicking on “bell” icon in group detailed page to open the notification setting popup
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