how to disable flapping notifications?

How do I disable flapping?
Our host sometimes has issues and xymon starts spamming all kinds of
flapping messages.
I only need alerts if the host is not responding to a certain service and
not if it flaps.

I have found:
http://www.xymon.com/xymon/help/manpages/man8/xymond.8.html
"Track the N latest status-changes for flap-detection. See the *
--flap-seconds* option also. To disable flap-checks, set N to zero.
Default: 5 "
where in the config do I put this?

tia