rpc-getblocktemplate calls CreateNewBlock()
(https://github.com/quark-project/quark/blob/f813e83ee229d9dce9f798051f96ca73f36d91f5/src/rpcmining.cpp#L517)

in CreateNewBlock() after MN-startblock it calls FillBlockPayee()
(https://github.com/quark-project/quark/blob/f813e83ee229d9dce9f798051f96ca73f36d91f5/src/miner.cpp#L360)

where FillTreasuryPayee() is called
(https://github.com/quark-project/quark/blob/f813e83ee229d9dce9f798051f96ca73f36d91f5/src/masternode-payments.cpp#L304)