How to see and amend Primary Clients easily

How to see and amend Primary Clients easily

Hi,

i'm trying to make some reports on the clients we do projects for.
However, i'm seeing a lot of "unknown" clients in the Zoho Analytics report.
I suspect that these projects have not been assigned well and this needs to be corrected.

Where can i easily see all Primary Clients for all projects?
It's not possbible to select Primary Client as a field in a custom view and it's not possible to select "blank" when filtering on Primary Client.
I'm not eager to go into the users of each indivual project to see who the primary client is, or if this is unassigned.

Thank you.
- Lieven