Browser-Caching 2017 Nginx as Proxy

Sorry for the old question. I found and read only threads which are older than 2016 or related to wordpress.
I use Woltlab communities where I selected the option "Activate GZIP", nothing more.

Please can someone help and explain in detail where to put the correct Browser-caching instruction.

PLESK ONYX 17.0.17 Update #17
SSL over Letsencrypt.
Dedicated Server Ubuntu 14.04.5 LTS
PHP 7.1.2 - FPM served by Apache
- Nginx Proxymodus
- Intelligent editing static...

Browser-Caching 2017 Nginx as Proxy