Tendenci can post Emergency Announcements to the top of your site.
This funtionality is only for site admins or superusers.
Log in, go to the Quick Links tab in the blue admin bar and select "Admin Backend"
Then, click on "Emergency Announcements"
This will take you to a list of current Announcements.
If you don't have any or you would like to add another Announcement, click on the grey "Add Emergency Announcement" button in the upper right-hand corner of the screen:
Here is where you will add all of the information for your Announcement. Label your announcement in the "Title" field.
Put the text you would like the Announcement to say in the "Content" box.
You'll need to make sure the text is centered and enlarged so it appears visibily on the homepage.
The default text is red but it can be adjusted.
Click the "Enabled" checkbox, set your permissions and click the blue "Save" button in the bottom right-hand corner.
Once your announcement is live, you can access it through the Admin Backend anytime for editing.