Hi,

You can restrict the Vendor Application in Odoo to show only vendors and not employees by customizing the domain filters.

If the vendor selection happens via a Many2one field on res.partner, you can apply a domain like this:

<field name="partner_id" domain="[('supplier_rank', '>', 0)]"/>

If the field already exists, please refer to the code:

<xpath expr="//field[@name='partner_id']" position="attributes">

    <attribute name="domain">[('supplier_rank', '>', 0)]

    </attribute>

</xpath>

Hope it helps.