If you're trying to set up a User with an SSL certificate, you'll need to assign the User an owned IP address. Use the following steps.
1) Ensure the Creator of the User has a free IP available. Go to, Reseller Level -> IP Management
Ensure you see an IP with status "free". If you do, skip to step 3.
2) If you do not see a free IP in the list, you'll need to assign one ot the Reseller. To do this , go to, Admin Level -> IP Management.
Select an IP that is not assigned to any Reseller, then click the "Assign To" button, with the relevant Reseller selected.
3) At this step, we assume the Reseller has a free IP available. To assign that IP to the User to use, go to Reseller Level -> List Users -> username -> Modify User username
Select the free IP and click "save". The free IP will not have the word "Shared" beside it.
After this point, the IP will now be assigned to the User.
Note that it's normal that you'll see the apache page or the shared IP page in place of the domain for up to 4 hours.
This will be due to DNS propagation.