Domain Mapping from http://hazmalabs.com/chocolatexcellence to http://chocolatexcellence.com

Hi, I need help on a plugin Domain Mapping.

Basically, I am running http://hazmalabs.com as a multi-site.

I have installed Domain Mapping.

I like one of my sub-site (http://hazmalabs.com/chocolatexcellence) to have sit on this single domain called http://chocolatexcellence.com.

I try to change my CPnel (DNS Zone Editor). Is there anybody that able to assist me from your side.

Thanks,
Hazman Aziz