I need your help with Odoo. Where I need to create a Sales order and as you know there can be many products in a purchase order. So firstly I need to enumerate the products rows like

1. Product name |  ........

2. Products name | ......

and as you know odoo don;t have this enumeration on default and the next thing I want to do with it is to print a quote but products in the quote must follow some rules like this:

This how the purchase order looks like

1. Product name |  Quantity 12

2. Products name | Quantity 0

3. Products name | Quantity 53

But when i check the quote it must look like this:

1. Product name |  Quantity 12

3. Products name | Quantity 53

2. Products name | Quantity 0

So the products with quantity 0 must be at the bottom but the number of row must not change in quote.

If there is something you can't understand about the problem ask me