Payouts are processed automatically every 2 hours. To get the payout you need to reach the minimum amount: 0.02 for Ethereum, 0.1 coins for other Dagger Hashimoto and 0.01 coins for Equihash algorithm.
It is not possible to change the payment threshold at the moment.
Any rewards accumulated by a given cryptocurrency address may only be paid to that particular address. Wallet balances could not be merged.