If you need to modify it in sales order then use it in variant configurator (variant configuration).
Steps will be same as I mentioned like charecterstics and class creation.
In this class type may be different, check at your end.
Now assign class to configuration profile. and then to material.
Now in sales order you will get all these charecterstics in configurator. You can assign characterstic value to material in sales order as per your need.
No, as per my knowledge in standard SAP you can not do this in delivery. so you have to fix material charectersics in sales order .
Regards