How to use prometheus-operator in the installer repo

Hi I am new to Istio and Prometheus operator.

Currently I am using prometheus operator to scrape k8s metrics.
I want to add another prometheus instance that scrapes only istio metrics.
I found this https://github.com/istio/installer/tree/master/istio-telemetry/prometheus-operator, But I . am not sure how to use it.

Thanks,
Sandeep