SOAP with Certificate based authentication

Hi, I’m trying to get an SOAP API call to work in the workflow. But I can’t find the option to install a certifcate. Where can I find this?

See
https://help.objectiflune.com/en/pres-workflow-user-guide/2020.2/#Workflow/Interface/HTTP_Server_Input_User_Options.html?Highlight=certificate
and
https://help.objectiflune.com/en/pres-workflow-user-guide/2020.2/#Workflow/Interface/NodeJS_Server_Input_User_Options_1.html?Highlight=certificate