Netem: but Lan-Lan

Hi, i’m testing Netem but i need to use it on a router with Lan to Lan router. My isp router connect to my OWrouter on lan port 1.
With this situation, with a PC connectet to lan port 2 on OWrouter, latency work only to reach OWrouter but when ping there is no latency. Can someone help with settings on OWrouter to make Netem work with this situation? Thanks

Please any help would be appreciated