Estimate/invoice ownership.

Estimate/invoice ownership.

I am investigating the viability of zohoinvoice as a solution to our needs.  One thing I can not seem to make happen, is to create ownership with an estimate or quote.

We would have several users and have a need to be able to identify an estimate/invoice by the sales person, to give ownership to a job.  Further we would need to sort the estimates/invoices by ownership in a report.

Is this possible, if so how?