Turn on Maintenance mode
You can turn on maintenance mode for any sites you've added to the Hub. While enabled, maintenance mode displays a temporary page in place of your website. This is useful when your site is still being created or when you need to take the site offline for updates.
- Log in to The Hub.
 - From the left-hand menu, select Sites then select Sites List.
 - Select Open site dashboard 
 next to site you’re working with. - From the list of tools on the left-hand side, select More, then select Maintenance mode.
 - Select the template you prefer visitors to see while maintenace mode is enabled.
 - Select Activate Maintenance Page.
 
You can turn off maintenance mode at any time by returning to this page.
More info
- Add a site to the Hub.