docs:Added make an announcement

templates/zerver/help/index.md

@@ -60,7 +60,7 @@ as a “**realm**”.
 * [@-mention a team member](/help/at-mention-a-team-member) (needs a
   note that you can't @mention when editing messages, since they may
   have already read the message / not clear how to notif them)
-* Make an announcement
+* [Make an announcement](/help/make-an-announcement)
 * Send a message in a different language
 * [Reply to a message](/help/reply-to-a-message)
 ### Reading

templates/zerver/help/make-an-announcement.md

@@ -0,0 +1,38 @@
+# Making an Announcement
+
+An announcement on Zulip is a message which will reach
+ all users organization-wide.
+Announcements on Zulip are sent using the `#announce` stream.
+
+1. To send an announcement, click the **New stream message**
+ button located at the bottom of your screen.
+ A box similar to the one shown in the below image will appear.
+
+    ![New stream message](/static/images/help/new-stream.png)
+
+3. In the **Stream** field, input `announce` to select the `#announce` stream.
+
+4. Enter the topic for your announcement in the **Topic** field.
+
+    !!! tip ""
+        Your topic name can be no longer than 52 characters.
+
+5. Enter your announcement in the box labeled
+ **Compose your message here...** or messaging box.
+
+6. Finally, you can now send your announcement by clicking the **Send** button.
+
+You can always delete your announcement by
+ clicking the <i class="icon-vector-remove"></i> icon located at
+ the top-right corner of your messaging box.
+
+Your announcement will look similar to the below image.
+
+![Example announcement](/static/images/help/announcement.png)
+
+
+!!! warn ""
+    **Note:** By default all users are subscribed to the `#announce` stream but users can
+     unsubscribe from and mute the stream.
+    This means that announcements, although organization-wide, will not reach users
+     who have muted or unsubscribed from the `#announce` stream.