Hi,

By default, odoo doesn’t provide a feature like creating a single invoice for many sale orders, but you can create a number of individual invoices for the respective sale order at a time, it is done by selecting all your sale orders from the dashboard, then in the action button you can see that the option like “Create Invoices”.

For your reference:

But you can customize the workflow under the guidance of a odoo developer as per your need. for any assistance please reach out to us.

Hope it helps