If you're already familiar with NetBSD, this information may not be particulary new or useful to you. It's not particularly Atari-specific. I do however use this for my own reference when I install NetBSD/atari.
- Make sure to run through the pkgsrc configuration described in the packages section.
- su to root.
- cd /usr/pkgsrc/security/sudo
- make install
- Uncomment the line that allows members of the group wheel to execute any command (with their password)
- %wheel ALL=(ALL) ALL
- Save and exit vi.
- Exit out of root.
Now as a user in group wheel you can run any command as root (eg: "sudo make install") after typing your password when prompted.