Bluebeam software is registered on a per workstation basis with a node-locked license. This means that Bluebeam Revu is tied to a particular PC. The locking takes place when the license is registered (married) to a particular PC.
On the other hand,Bluebeam Revu licenses are also portable. This means that we can easily transfer the license or registration from one PC to another. A realistic use case would be for when you are using Bluebeam Revu in your office today, but need to you Bluebeam Revu on your Laptop while in the field tomorrow. You don't necessarily need to purchase a second license just for field work. See the video below for instructions on transferring your Bluebeam Revu registration license to a second PC. You'll actually have Bluebeam Revu installed on 2 (or more) PCs, but it'll only be registered on 1 at a time.