In v20 LTS, the option to select the type of client-server network layer can be found in database settings in the Compatibility section under “Client-server”.



Starting in v20 R2, the option to select client-server network layer type is located in the Client-server section in the “Network options” tab.



Note that the option for “QUIC” network layer is only available in project mode in 20 R2 and newer.