Hi legion1978, thank you for clarifying your question even further :). I now know what you mean. However I am not sure how to go about adding what you want.
I saw your link above and yes I can see the order number. Is this order number a random number or is this order a fixed number?
The following URL implements something similar but perhaps it is not what you want. I guess reading your question further the only person that can answer you correctly would be @mike Challis the plugin developer.
In regards to your other question…
i would settle for a way to edit this template, just to re-arrange stuff by client request. but i dont know where its located ??
What kind of modifications are you looking to implement? As far as I know you can change the fields sizes, move them around using CSS, div containers and even assigning an individual class to each div container used.
One more URL link you can read in regards to creating a ticketing system or an incremental numbering system.
I hope the above provides you answers to your questions.
Kind regards