New request from my company's owner.

They have to do partial deliveries and do backorders sometimes. I see Youtube videos of people being able to manually input how much of the items are 'Done'. I can't see these options. 

You can see an example of this in the video called How to Sign Your Delivery Orders video by Cybrosis. We are also currently using Odoo Online. Thanks so much.

Would love any input on potential processes or workflows.

We have our own delivery team and currently they will be using the Barcode app on Odoo Mobile to validate deliveries after they deliver to customers' homes. Thanks!