Thank you very much Michael. I thought, before I was on the forum, there was just Odoo online. Just a beginner, so searching the internet how to do everything with studio now.

Hello,

if you would not use Odoo Online you could have used this OCA Module "Account Invoice Grouped by Picking". This would create this entry on the invoice:

So you have to check if you can do something similar with Odoo Studio.

Hope this helps you.

Thanks and greetings

Michael