Is your feature request related to a problem? Please describe.
As far as I can tell, there is no way to input an EZproxy URL without selecting one of the institutions. However, my institution isn't in the list, and as such I can't use EZproxy at all in the app.

Describe the solution you'd like
Just below the "no institution" button (or elsewhere for that matter) there should be a "custom" one, which would allow the user to configure the proxy themselves.

Describe alternatives you've considered
The only alternative is to copy the article link and use the proxy from a browser manually, which defeats the purpose of searching in the app.

Also, thank you so much for your work!