Announcement banner

Where is it ?

On the top of the page you will be able a settings icon , click on that 

Second step 

This is what it will show , the last option if of Announcement banner
Click on that

Enabling and adding message

Here you can enable the visibility of banner and you can add a message 

Enabling button

Scroll down and add a button label , with that you have to add a link , so it can redirect somewhere

You can make it visible on Home page only OR make it visible on all the pages

Video Demonstartion