Desktop how to add the proxy settings for new install

When you run the client it asks you to enter the server url
Im my case that will not connect because its behind a proxy then it will fail.

But at no point if there an option to set the proxy .
Is there a way to get to the network settings on the clinet if you have not added a site ?

I do so the config file has proxy options but wondering if you can get to that on the client with a new install of the client in the gui

Thanks