How to Configure Subdomains in WordPress MU

1. Log in to your WordPress MU administrator account.
2. Click 'Sites' from the left menu, then click 'All Sites.' This displays a list of sites and subdomains on your WordPress network.

3. Click 'Edit' under the subdomain you want to configure.
4. Change the subdomain name by typing a new name in the 'Domain' and 'Path' text boxes. This changes the URL address for the blog using that domain name.
5. Navigate to the 'Settings' tab. This displays the site settings for the blog that uses the subdomain. Type new settings in any of the text boxes on this page to configure the way the blog on the subdomain displays.
6. Click the 'Save Changes' button once you have finished editing the subdomain. Return to the 'All Sites' page to edit other subdomain sites.