Add redis_exporter to Prometheus in pmm2

Hello,
Do you have to config PMM2 to monitor redis server via prometheus redis_exporter?

I search in blog and saw the link: [url]Does Percona Monitoring and Management (PMM) Support External Monitoring Services? Yes It Does! - Percona Database Performance Blog

But it looks pmm2 doesn’t support external service yet?

I would appreciate if someone can share the solution.

Many thanks and best regards,
Shiron