Delivery Notes Status

Would it be possible to add column on Delivery Notes so we can see the status of Delivery Notes.
We could key in the status of the Delivery Notes …same like Sales quotes
its has been Delivery Notes converted to a Sales Invoice then it should be automated

Not done
or something else ?

I believe you misunderstand the purpose of a delivery note. A delivery note records the delivery of goods to a customer. The fact that it exists means the delivery has been completed. There is no such thing as a delivery note that is not “done.” The delivery note (if you are using them) completes the quantitative aspect of a sale.