Hello,
In all cPanel servers, by default the shared IP of the server gets assigned to the domain, whenever you create any cPanel account from WHM. In this way you can add multiple domains on shared IP of the server. That will not make any problem while accessing cPanel of each domain. The URL for accessing cPanel will be same i.e.
http://IP:2082 , you will only have to use the correct username and password of the respective domain.
In second case, you can assign dedicated IP address manually for each site from the WHM:
Main >> Account Functions >> Change Site's IP Address
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Best Regards,
AlanV 
UK Web Hosting, Website Hosting, Web Hosting UK, Web Hosting