Sophos XGS site-to-site SSL VPN static IP address for client

Hello,

I have Sophos XG 2300 with firmware 19.5.3 MR-3.

I'm trying to set a static IP address for a site-to-site SSL VPN client. Is there any way to achieve this?

Whatever I do it keeps getting leased IP address from Global DHCP pool or the VPN connection does not work.

I would like to set a firewall rule only for this VPN connection but I am unable to do so since no user or group can be used.