Odoo-18.0-20251222/account_move_tier_validation_approver/readme/USAGE.md

You can assign a default user for approval associated to a supplier. In the partner form view, go to the Sales and Purchase tab, and into the Purchase section, and fill the field Approver of Vendor Bills.

When you create a vendor bill the field Responsible for Approval will be filled in with the partner's default. You can change it if needed.

Be aware that you won't be able to post a vendor bill unless you have indicated a Responsible for Approval.

Used in connection with the module Account Move Tier Validation you can set up approvals specific to a department.