you can install POD Farm the software on multiple computers... BUT to use it you need a license.  it sounds like you have already bought a POD Farm platinum license which will either be on your ilok or Line 6 hardware, and the software will only work with the ilok or hardware connected to the PC or laptop.

so yes you can install it twice, but to use it twice at the same time you need 2 licenses.  if you only need to use it on the desktop or the laptop at different times, then you can totally do that, just more your hardware or ilok to the machine you want to use it on.