Drupal allows you to create more than one site under one Drupal installation, but the databases should be different for each site.

Let’s begin with this example – Suppose, we have two domains abc.com and xyz.com, abc.com is your primary domain & xyz.comis your secondary domain. Let’s see how to create two different Drupal sites for abc.com and xyz.com-

1. Install Drual on abc.com domain.
2. Create new MySQL database & user; these details would be used for new site on xyz.com
3. Create a new directory as /sites/xyz.com inside your main Drupal folder i.e. public_html.
4. Copy the file /sites/default/default.settings.php to /sites/xyz.com/
5. Use park feature in cPanel to park domain xyz.com to abc.com
6. Now go to xyz.com/install.php and complete a new installation for xyz.com with the details you have created at point no. 2.