From the left side Menu, select 'Management' option and select 'Zones & Rates'.
Land on the Zone Index page and choose the 'Edit Zone Details' option for the zone in question.
Enter the description text. This is usually important information about address or purchase information such as FlexPasses not available during an event rate.
Scroll down to the end of the page to choose the 'Update Zone Details' button in blue to complete the description update.
Once complete, land on the Zone Edit page again.
See the confirmed update, and the text saved in the description field.
Confirm the text changes in the app.