How to route read queries from spesific user to standby nodes on mongos?

Hi ,
We have 3 node sharded mongodb server and 2 mongos server. We want to route queries coming from DWH ETL jobs to read only standby on mongos. Is this possibe and how to configure this?
Regards.

what’s this?

If you want to route requests to a specific mongodb node, you can use zone (for shards )and/or tag list (for replica sets).

Hi Kobe
i mean secondary nodes on shards.
can you send me link for using zone?
Regards.