Macro to open browser with specific proxy


I sometimes do research through a university library with a specific proxy.

By using the proxy, I have access to journals which I could not normally access.

I created multiple elementary macros to open my browsers. I wonder if it would be possible to create 2 macros per browser, one without and one with proxy.

Why not always use the proxy? The university advises against, and it does seem slower.

thanks very much

below: example of proxy setting window in chrome