As far as I know, FM can only store 1 printer-setup for 1 file. I used to have different FM-Files for different printer-jobs.
Currently I'm evaluating the PrinterSwitch from MyFmButtler:
This plugIn can evaluate connected printers, put theirs names into a field where you can use theme as a value-list.
Seems to work. Some leak of "copies" functions, especiallly for MacOS. I wouldn't know about function for orientation
(Portrait / Landscape).
Is it possible for FM Go ??
Because my application will run on iPAD.
I'm sorry but there's no way to have PlugIns to run on any iOS-Devices. There's only a small chance that we will see this in the future.
(I wouldn't expect this for FM 13!)
The only way I see to grant usability is to build relationships to separate documents for each different printer.
Otherwise you'ld have to print documents single by single.