If you have a trigger set up to monitor a process say, NTPD, the documentation seems to suggest that you can use things like

{INVENTORY.OS.SHORT}

to make that trigger only apply if the host inventory field is something, say Linux.

What it doesn't detail is how you apply this.

So if I want the NTPD trigger to only apply if the host inventory field 'INVENTORY.OS.SHORT' is Linux, how do you apply this?