Can the router be configured as a proxy in IP:PORT format?

Question

VPN

Keenetic Extra (KN-1711) Tell me

how to set up or at least what is the correct name (in which direction to look) for the following:
In the "Other connections" settings, several OpenVPN connections (interfaces) have been added.
It is necessary that through the proxy settings (ip : port) in browsers, each of the connections can be used simultaneously from one PC.

those. the output requires, for example

, 192.168.1.100:10001 - proxy for VPN1 192.168.1.100:10002
- proxy for VPN2
192.168.1.100:10003 - proxy for VPN3

and these proxies can already be used in programs (browsers, etc.) simultaneously from one device connected to router via WiFi