OPC UA server certificate (OPC Foundation server)|OPC UA Implementation: Stacks, Tools, and Samples|Forum|OPC Foundation

Hi,
I have made very long-lasting self signed certificate (from a third party) in order to use it in the OpcUa server that we use in our company from OPC Foundation and it has one-year validity. I want to add the certificates to the OpcUA server. I also have access to the .Net source code of this OpcUA server. 

So my question is how to add the certificate to the Opc server? In other words, how I can tell the OpcUa server to use the certificate that I have generated instead of its own generated certificates?

Best regards.