Each License is locked to a computer (+1 backup computer).
The License is locked to a server. You must install a small application called CMServer. It will need an internet connection to the CopyMinder database (run by a third party) to validate your license.
You can install MechDesigner on any computer that has access to your server. The Product-Key on your server manages the maximum number of computers that can run MechDesigner at one time.
Please instruct PSMotion before you buy MechDesigner which license-type you want: a Network/Floating or a Standalone.
PSMotion cannot change a Standalone to a Network License, or a Network to a Standalone-License after you have installed MechDesigner.