Access from local network by local ip

How to set up a peer so that devices from the local home network can be accessed via local ip. That is, I have a laptop with a local ip, for example, 192.168.2.10 and there are pi raspburrs with a local ip 192.168.2.15 and vpn ip in the same place 10.15.15.2 vpn server is not working and there is no access to the Internet i.e. access only on the local network.

@st.spasam VPN Server is not working, whats the exact error you are facing? On what platform have you installed firezone?