Creating updates and announcements for public notification
If you would like important notices / announcements to be posted on the main page of your help desk you can setup a KB category to handle all announcements.
Here is how you could get started:
Click on "Content"
Click "Add Category"
Name a category "Announcements"
Go to Administration > Settings > Public Settings & Styles
Edit the default desk
Scroll down and check the "customize startup page"
Select "Recent knowledge base articles"
Choose the category named "announcements"
Once this is setup any content posted into the announcements category will show up on the startup page of your public help desk.