One domain
Hi ppl.I have a kind of a problem, well I dont know if it is a problem, that why I need your help

The thing is that I have one server at one company, but I would like to get some reselling accounts at other company.
I need to keep my first server becouse of some software that is installed on it, but I would like to have this reselling accounts from other company under the same domain.
I hope you can understand my question.

Best regards