State Government
Control over district courts and courts subordinate to them - including posting, promotion, and granting leave to judicial officers below district-judge rank - is vested in the High Court, though this doesn't take away any statutory right of appeal such an officer may have, or let the High Court act outside their prescribed service conditions.
This is a crucial judicial-independence provision: day-to-day administrative control over the state's entire subordinate court system - postings, promotions, leave approvals for junior judges - rests with the High Court, not the state's executive government, keeping the judiciary self-administering rather than dependent on the executive for career decisions.
This is why a junior civil judge's transfer, promotion, or leave approval is decided by the High Court's administrative machinery, not by any state government department - insulating even routine judicial career decisions from executive interference.