As the Zoho Sign integration with CRM doesn't work on custom modules, I have had to do it via Zoho Flow.

The issue I'm having is that the sent document's owner is always set as me (as I created the template/flow, presumably) rather than the person that pressed the button within CRM.  As a result, the user is unable to check on progress without having admin rights. 

I can't seem to find a way to set ownership from either a function or from Flow.  Has anyone got any ideas how I can do this?