To view all of Liongard's prewritten Metrics as well as Metrics written by your team, in your instance navigate to Admin > Metrics. Custom Metrics can be shared in the Liongard Library. See our documentation here.
For Metrics to display in Liongard, they must be enabled to display.
On this screen, you can also write your own Metric using our Metric Builder. Review our documentation on How to Write a Metric to learn more.