How to add a HTTP Proxy on RethinkDNS?

Hello there, i got a paid proxy today but i cant find the solution how to add that to RethinkDNS. When i go to “Proxy” i can create a SOCKS5 or HTTP(S) Proxy but the last one has only a field for the IP and nothing more. I think im missing smth important here but dont knw what. Any ideas? Ps: On desktop over foxyproxy is it working if u need this detail.