Clients who have multiple domain hosting services

[Egdotcom]

Very much a newbie with Blesta.
Many of my clients have miultiple services eg hosting accounts for different domains.
Setting up Blesta seems easy but I just cant see a way of identifying a service eg 1 year hosting for domain1.com, 1 year for domain2.com.

I presume this is possible but cant find a way of doing it.

Does it have to be connected to Cpanel first?  Read the hosting accounts and assign them to a client?

Paul