Prometheus enable userstat

Hey guys,

I set up Prometheus and Grafana Percona dashboard for monitoring MariaDB. I want to monitor User Statistics that Percona dashboards can provide but there is said that enable userstat to ON for mysqld_exporter is needed. I set up userstat in MariaDB but I have no idea where the set up of userstat in MySQL exporter is located.

In Grafana it says

These graphs require additional options to be enabled for mysqld_exporter: -collect.info_schema.userstats=true

Also userstat should be enabled on MySQL.

Can anyone tell me where is it possible to set it up please :))

Thanks in advance!