The minimum payment is 0.5 coins for all the masternodes except $PAC. The minimum payment for $PAC is 50 coins.
If your reward is less then 0.5 coins (50 coins for $PAC) it accumulates at the account of the service and it is paid later with the next rewards when the total of 0.5 coins is reached.
2Masternodes masternode shares and hosting: https://2masternodes.com/
2Miners mining pools: https://2miners.com/