You may have multiple domain names pointing to different subdirectories and different web pages of your main domain.
For example, suppose "www.client1.com" is the name of the domain you would like to subhost. Within your main account, you create a subdirectory for "client1," naming the directory anything you choose. For purposes of example, suppose the name of this directory is "services." Therefore, whenever someone types "www.client1.com" in their web browser, they will be taken to "www.client1.com/services/".
Here's a real-life example: we subhost the domain iShopWare.com in the subdirectory named "iShop" on the PeoplesWare.com domain. When a visitor goes to the URL http://iShopWare.com, they are delivered to http://iShopWare.com/iShop/ and in the process they never see the PeoplesWare.com domain name in the URL.
Note: In order to do this type of subhosting, we must first park the domain to be subhosted onto your main account domain, and then you use the Web Control Panel to specify the subdirectory to which the domain should be redirected to. You need to pay the one-time set-up fee for parking a domain first, before it can be subhosted. There are no additional monthly fees.