By default, IP Access can connect clients to the Management LAN (eth1) network of any remote node that has been activated and enabled for IP Access, by automatically pushing a route to the client when the OpenVPN client connects.
You may optionally choose to automatically push routes to nodes' wired WAN network (e.g. Network Interface aka eth0) by selecting IP Access > Advanced Options > Push Wired WAN Routes.
You may also choose to disable automatic route pushing (e.g. should you want to manually add routes on the client), by unchecking IP Access > Advanced Options > Client Route Pushing Enabled.