How to set default value for a custom field in purchase order using inherit value, in Zoho Books.

Hi,

We have this requirement where in Vendor's we have a custom field containing details "Type of account" (details will be free text) as guidance when raising new purchase order or bills.

In Purchase Order and Bills, we also have custom field named "Type of account" which we want to inherit the value, as default from the Vendor's "Type of account", every time we changes Vendor when we create new Purchase Order or Bills.

Attached is the screen shot we capture. Any guidance would really be helpful on how to achieve this.

Thanks