How do I get SolarWinds Orion to monitor my server by SNMP and not just ICMP?

[Tough-Grass-3998]

Hi,
How do I get SolarWinds Orion to monitor my server by SNMP and not just ICMP?
version = OPNsense 21.7.8-amd64
FreeBSD 12.1-RELEASE-p22-HBSD
OpenSSL 1.1.1m 14 Dec 2021
I've managed it to get it woring vis ICMP but I can;t seem to work out how to do it via SNMP and ICMP.

Any help gratefully received