Temporarily de-activate websites

For most websites I develop, I start with a project site in a sub domain. Once the site goes live, I would like to disable the project site, but keep it available for later updates etc. Is there a simple and convenient way to de- and re-activate websites with ISPConfig?

 

You could password-protect it with an .htaccess file. You can do that under Web-FTP.

 

I thought about that, but lazy as I am, I was hoping for something even more convenient

Thanks anyway