If you're on OpenBSD (and probably other BSD's) you likely have doas(1) instead of sudo. Its _almost_ the same thing. The configuration file ditches EBNF for a more forward approach. It doesn't have LDAP support that I am aware. Its very _simple_ and works.
You can find docs in doas.conf(5) and here is an example:
`permit nopass tedu as root cmd /usr/sbin/procmap`