Zoho Sign with CRM Purchase Orders

Zoho Sign with CRM Purchase Orders

Hi Team,

I am new to Zoho Sign and want to streamline a few business processes.

We raise Purchase Orders and require two approvers to sign.

I have modified the Purchase Order form to have two new fields "Approver 1" and "Approver 2". I would like the user names from these fields to pre-populate onto the Signing experience without the user having to add the names all of the time. 

Can this be done? There is a dropdown that says User, then the user can select our users, but it would be nice if they can be pre-populated from the Purchase Order form.

Any suggestions please?

Thanks