Host, port, user, password.

# rotating HTTP
http://USER:PASSWORD@HOST:777

# rotating SOCKS5
socks5://USER:PASSWORD@HOST:666

# sticky, same address until the session id changes
http://USER-session-8f3k2a:PASSWORD@HOST:777
HTTPPort 777.
SOCKS5Port 666.
StickyAdd -session- and an id to the username. Same id keeps the same address.
PlaceAshburn. No country, state, or city choice.