I'm looking to apply a threshold to one particular port on a single router and get the resulting alerts for that as well. I'm not sure what parameters to use though. Would this be done under Customizable Interface Groups and can I actually the use the port description or some keyword therein as the variable? It is probably the only unique thing about the port on that device.
2% utilization on a 100 Mbps full-duplex port would equate to 2 Mbps sustained in one direction.
To remove group customization, edit the desired group's properties, and remove the ruleset. You should apply changes after doing so.