With dongle in and production manager running, you can have 2+ copies of flexi loaded on your network. But, it searches your network and only allows one at a time to operate.
edited to add: Just read my post and didn't make sense,
The Dongle affects 2 programs, Flexi the design program and Production Manager. If you have the dongle on the production manager machine (typical), you can close the Flexi design program on one computer and start a copy loaded on another machine without moving the dongle as long as the production manager is up and running. Flexi takes care of searching the network for the dongle and won't allow 2 copies of either production manager or the Flexi design program to run at the same time without additional dongles. Of course, no assurances of network reliability of machine or software should be assumed by this offering.