I manage to add http with the help of https://www.netxms.org/forum/configuration/web-site-monitoring/
Now it is giving me
"Service Status [ 0 ]"
in status poll
and graph shows zero.
But still need other services smtp pop3 mysql etc.
Regards,
Just follow the video tutorials. They show you how to add devices to monitoring and everything else.
https://www.netxms.org/forum/general-support/netxms-video-tutorial-series/