how to add in domain name in service

[HernanMX]

Hi.

I hope I can express what I need.

I do not want to automate my services, what I need is a control to collect, I need to know when to charge a domain, a hosting, or several domains of the same client ...

Tell me the date I should do it.

What I need. But, I can not find how to add in domain name when creating the service.
Since several clients have multiple domains.
And I need each service to specify the domain name associated with the service

Excuse me, my native language is Spanish.
Greetings.