ok
let us make this a bit easy.
the mains server host owner is the root and the first ip is used as the main shared ip.
now when you add resellers to the box then what you do is you create a sub owner on the server and then only you will be able to give that sub owner which is a reseller in our case a dedicated ip which will be owned by that subowner and any other accounts owned by that reseller will go under that ip.
well i cant see why you want to share the ips like this, keep them at least if some one got banned on a main ip for some reason then then you can sell them another ip.
now if you just want to do it regardless about any thing just creat some resellers on some subdomain of your main domain and set an ip for each and give the owner ship of the account to the multy resellers which is your self actualy, and that is the most easy way.
regars.
__________________
استضافة مواقع + ريسلر استضافة + ريسلر دومينات + سيرفرات خاصة
http://boostdomain.com
http://bah2day.com