May one person use the same license on several computers?
A license may be installed on more than one computer providing that the license will not be used at the same time on both. So if a customer wants to use a license at home and at work, they can do so as long as they do not bring their home machine to work and work on both of them at the same time.
Our desktop software is licensed on a per-user basis, and we do not provide one corporate license for any number of developers. A customer needs as many licenses as they have concurrent developers.
A rare exception is when a customer has a corporate contract signed with JetBrains and has more than 150 licenses.
Our server products normally require a single corporate license.