There are two ways where your members can be notified when you start a topic.
First, when creating a new topic, the ‘Send As Announcement’ option is available at the end of the form. Simply enable this option by ticking the box.
Second, the topics that you created are displayed on the 'Dashboard’ where group members will be able to see. Every time your topic receives a reply, it will reappear at the top of the Activity Feed.
Note: This option is only available when you are creating a new topic. ‘Send Topic to Group Chat’ is another option to share your existing topics with your group members.