Please, your ideas for Vendor Portal for Purchase Orders in which Vendor can update a custom field.

Please, your ideas for Vendor Portal for Purchase Orders in which Vendor can update a custom field.

I welcome your ideas on where/how within the Zoho platform to do a Vendor Portal that allows a vendor to

1. See Purchase Orders which belong to it.
2.  Update one or more custom fields at the Purchase Order level.

The Vendor Portal within Books cannot do this.

This might be sufficiently important to my company that we create a custom portal, and link Books Purchase Orders to it.

Your ideas, please and thank you.