Can manager provides 3 copies of invoices (stated original and 2 copies)? since the invoices cannot be printed to dot matrics printer.
Why do you say invoices cannot be printed to a dot matrix printer? The Print function is executed by your operating system and printer driver, not by Manager. So when you print, just select 3 copies. If your printer and driver are so limited in functionality there is no option for number of copies, you will have to print three times.
If you are asking whether Manager can label copies as Original, Copy 1, and Copy 2, no it cannot. But you could create three different custom themes and use them to print three marked copies. Or you could buy rubber stamps and stamp the copies.