Hide Create Invoice Button for Sales User Odoo App helps users to hide the "Create Invoice" button and "To Invoice" menu for sales users. "Create Invoice" button on sales order and "To Invoice " menu under sales menu only visible for Billing Users and Billing Administrator.
Configure Billing Access Group for Sales User
You can see 'Create Invoice' button and 'To Invoice' menu only should be visible to "Billing" access group.
Hide Create Invoice Button for Invoicing User
You can see 'Create Invoice' button and 'To Invoice' menu hide for invoicing user.