Exploring using the Nextcloud high-speed back end using proxy?

Nextcloud is offering high speed back end code to address sync speed problems.
This requires using a proxy-server for security of credentials and update to php 8
Instructions for apache are:
"To use apache as a reverse proxy you first need to enable the proxy modules using
sudo a2enmod proxy
sudo a2enmod proxy_http
sudo a2enmod proxy_wstunnel
Then add the following lines to the <VirtualHost> block used for the Nextcloud server.
ProxyPass /push/ws ws://127.0.0.1:7867/ws
ProxyPass /push/ http://127.0.0.1:7867/
ProxyPassReverse /push/ http://127.0.0.1:7867/
Afterwards you can restart apache using
sudo systemctl restart apache2 "
(https://github.com/nextcloud/notify_push)
How is best to do this for a site running on ISPConfig?

 

Thank you Till,
So simple. Somehow, I have difficulty believing the directives field can be so easy to use!