I wrote above the command line on how to start cupsd immediately.
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forums.freebsd.org
This shows what a command line entry looks like.
Also, in the link "CUPS on FreeBSD", shows the directory where the file resides, so it will be on when the computer reboots.
/etc/rc.conf
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docs.freebsd.org
shows where files are.
You're not doing your part, and reading what we have showed you.