To ensure the integrity of your outgoing invoices, you can use Vebio's approval routing feature to require a review and approval of all your billings before they are sent to invoicing. To suit your practices, Vebio offers two approval routing methods:

By Supervisor.  Under this method, billings and expenses submitted are automatically routed to a user's direct supervisor for approval.

By Project Manager.  Under this method, billings and expenses submitted are automatically routed to a specific project's manager/owner.