Redirect Browser language

Hi!
We would like to use a multisite to make a site multilingual (2 languages). Referring to this blog post https://premium.wpmudev.org/blog/multilingual-wordpress-site-multisite/, how do we make it so, that the browser language is detected and automatically redirects? We would like to use subfolders instead of subdomains for the installs.

Also, the third subfolder is a different department and it does not need to be effected by the redirect for the two languages.

Doable?

Thanks!
Best,
Richard