MEV stands for Miner-extracted Value. Ethereum mining pool could get extra profits by including some special arbitrage transactions in the blocks. This is an automated process that is possible thanks to p2p exchange platforms (DeFi) when the funds' swap is done without a centralized exchange. Specialized software can watch the incoming transactions in the blocks to seek opportunities to step in the middle of a chain of token exchanges and profit from the exchange rate difference.
MEV transactions are already being included in 2Miners Ethereum pools blocks, bringing the increased revenue for the miners. Read more. You don't need to add any additional settings to your mining software to get MEV rewards.
In the Ethereum SOLO pool, the MEV reward is added to the regular block reward payable to the miner that found the block. The miner who finds the block gets all the MEV reward if it is present.
2Miners mining pools: https://2miners.com/
2CryptoCalc mining profit calculator: https://2cryptocalc.com/