Link projects to zoho books invoices

Link projects to zoho books invoices

Hi,
I'm a happy Zoho One user.

We'd need to link projects to zoho books invoice.
Because, this is the way we work:
  1. we first create the zoho books invoice,
  2. and then, maybe after a few weeks, we create and work on the relative project.
We'd like to link the projects to the zoho books invoice/customer.
I've seen a table in Zoho Analytics, "Project Client Mapping", but they are listing the Client in Projects Portal Client Company :-/




Starting from a list on month invoice, I'd need to create (and print) a view of the sum of Projects' hours we worked for each invoice.

Can you give me an overview of how I could solve this need?

I've read this page, but it doesn't seems to address my workflow.