New users can be created on Shatterdome (the base station) or the TX2 by any current user with sudoer privileges. The steps are as follows:

1. adduser <username>, replacing <username> with the name of the user you want to create.
2. Enter the required information.
3. usermod -aG sudo,dialout,tty,i2c,docker <username>
4. Login to the new user.
5. Enjoy!