In the main menu, select Content > Announcements to view the Edit Global Announcement page. Here, you edit the global announcement that appears at the top of all pages of your web store.
Enter the Announcement Text, and then edit the Announcement Link to match the page in your store that you want to appear when a visitor selects the link. Edit the Announcement Link Text to contain the text of the message you want to appear in the announcement link.
Choose a Publish Start Date, which is the day on which the Announcement will begin to appear on your web store. Optionally, choose a Publish End Date.
The Announcement will only appear for the dates that you specify.
Select the Save button at the bottom of the page to commit your changes, and then select the Go To Front End button to view the announcement at the top of any page in your web store.