Hello,

  So for learning purposes I duplicated the user group "invoicing / Billing" and assigned a new user to this new user group. I tried testing this config by creating a new receipt and I can't post it with the new user.

My knowledge is very limited on Odoo, so I couldn't get very far by poking around and googling for answers.

My guess is that maybe the "post" button inside Invoicing is only shown to certain groups in the sense that maybe there's an "user group" attribute related to the post button?

Thanks in advance and I'll gladly provide more info if you believe I missed something.