Allowing OpenVPN clients to communicate with each other

I have an ovpn server set up and working on my ROS device and my clients are able to connect fine. They can also browse the network inside the router and the internal network can also communicate with the clients directly. What I would like to do now is to have the connected clients be able to talk to each other which they cannot do at this point.

I imagine it’s going to be a routing issue but I’m not sure if I need to look on the client side or the server side.