If your organisation has Yapster's multi-timeline feature set up, you can choose which newsfeeds you'd like to receive notifications from when there is new content. All newsfeeds you are part of will appear under Mute by Content Type when you head to your Settings Cog and click Notification Preferences.

Your org-wide news feed will appear at the top of this list, and can be muted using the toggle.

Choose the newsfeed you'd like to mute by toggling the option on, this will change colour:

Please note: Administrator announcements override standard newsfeed notification settings due to their critical nature - users will always receive these push notifications regardless of notification setup.