We only need a flash to work on the internal site.
We are slowly moving to alternat but it's a very slow process for us
At the point that Chrome removes support for plug-ins, there's no infrastructure in the browser to allow Flash to run.
We'd strongly recommend talking to HARMAN about licensing a secure, maintained solution.
Running Flash Player in Chrome after EOL will quickly require running an outdated version of Chrome, which is really not a great solution.
See our Enteprise EOL FAQ for more:
https://www.adobe.com/products/flashplayer/enterprise-end-of-life.html