Hi, Daniel!
My suggestion is to pause printer before printing documents and resume after. The code below is tested, but I'm not absolutely sure.

#define PRINTER_CONTROL_PAUSE 1
#define PRINTER_CONTROL_RESUME 2
#define PRINTER_ACCESS_ADMINISTER 4

Declare integer OpenPrinterA in "winspool.drv" as OpenPrinter ;
	String pPrinterName, ;
	Long @ phPrinter, ;
	String pDefault
Declare integer SetPrinterA in "winspool.drv" as SetPrinter ;
	Long hPrinter, ;
	Long Level, ;
	Long pPrinter, ;
	Long Command
Declare integer ClosePrinter in "winspool.drv" as ClosePrinter ;
	Long hPrinter
Declare Integer GetLastError in Win32API

hPrinter = 0
pDefault = Replicate(Chr(0), 8) + Chr(PRINTER_ACCESS_ADMINISTER) + Replicate(Chr(0), 3)
pName = Set("PRINTER", 2)
OpenPrinter(pName, @ hPrinter, pDefault)
SetPrinter(hPrinter, 0, 0, PRINTER_CONTROL_PAUSE)
* ......
* Print your documents here
* ......
SetPrinter(hPrinter, 0, 0, PRINTER_CONTROL_RESUME)
ClosePrinter(hPrinter)

>Hello everyone,
>
>This is a requirement of a new application I am developing:
>
>Must develop a process that will queue documents in a custom order to a predetermined location and release them to the network printer queue only when the local queuing is complete.
>
>The documents may be of different types.
>
>Anybody know how to do this?