How a LoL duo boost is queued
Duo boosting runs as a 2-player premade: you and the booster queue together in the same ranked lobby, both accounts online at once, region-matched behind a VPN. Nobody signs in to your account and no password changes hands — the difference from solo boosting is that you are physically in every game. The result still lands on your Solo/Duo (or Flex) rank, because that is the ladder this queue feeds; the win counts for you exactly as if you had climbed it alone. The comparison table above lays the two methods side by side so you can see what each one trades.