Q:
Multiple Accounts
ArenaNet Communications Manager
A:
You can install the game on multiple computers and play an account on any/all of those systems. You will need a unique serial code for each game account. So you could have one installation on your computer and four people could use that installed copy, but they would each need to log in using a unique log-in or account name (which is an e-mail address) and a password for that individual account, as well.
Gaile Gray
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet
Each account would need a unique serial code – of which you get one per copy purchased of GuildWars 2.
You can use them all on the same install, however