Create routes between 2 interfaces

Hi all, on rb750 I have two lan interfaces in use, ether4 (192.168.0.1) and ether5 (192.168.1.1) would like to create a route between the range of ether5 with a device with ip 192.168.0.250 (ether4). I made several attempts, creating nat, routes and a bridge but did not stay the way I wanted. Any suggestion? Thank you

In your case, routes must be parametred on the devices, not the router.
on 192.168.0.250 device, add a route to 192.168.1.0/24 via 192.168.0.1.
And on the 192.168.1.x device you want to reach, add a route to 192.168.0.0/24 via 192.168.0.1.

You have no special configuration to add on the router, as it automatically does the routing between networks. If it doesn’t work, reset-config your router to wipe all forgotten parameters you did before and just add the IPs on the two interfaces.