Tina,
If you mean if you can use Print to Web to print to 10 printers at once, then no, you cannot print to 10 printers at once. You'll have to do Print to Web 10 times.
However, there is no limits to the number of printers you can have on your PrintShop Mail Web server, so you can print to any of them as many times as you want.
Regards,
Raphaël Lalonde Lefebvre