Hi,
I have started the setup of vendor invoice workflow, so I managed to assign the first approval task using conditions. Now I want the next approval to be based on the hierarchy based on the invoice approval limit. To use the hierarchy, the options are to start from approved by. I could see that this field is empty since I am using a vendor collaboration invoice, and there is no manual process to set this field.
Initially I thought that the approved by field would be set automatically based on the first user who approved the first task, but it is not. Please guide me on how to use the approval hierarchy.

