You can enable WordPress multi-site functionality on our hosting service by following the instructions in the official WordPress documentation for Creating a Network. Note that we do not support wildcard domains, so you will need to follow the instructions for “Sub-directory sites”. This configuration will only work when WordPress has been set up directly in your document root folder. If you’ve given WordPress it’s own directory, you will need to move it back to the document root and adjust the values for ‘site address’ and ‘WordPress address’ before proceeding.
NOTE: For simplicity, it is recommend that you DO NOT set up your WordPress multi-site using the cloud Testing URL. Otherwise, you will need to follow WordPress Codex information for changing the site URL to remove the Testing URL references from your database.