An admin has the right to broadcast to all employees. You can share your thoughts, add attachments and click Broadcast to share with all employees. Only a manager of any department or location can share a post to their group. However, any member of a team can post to their own team.
To create a post, click on the + button on the Post screen on web. Admin can select Broadcast if they wish to share this post with All Employees or Post to share with a specific department, team or location. On Mobile, in More, you can access Posts and tap on the + button as well.