@ircrp 30 April 2021 more from that month

Pancake Swap rolls out a new staking pool which will automatically re-stake the gained funds (minus a small fee) for its users. The "automatic" part of the compounding actually appears to be achieved by incentivising other users with a small bounty for triggering the smart contract compounding function. Source: https://docs.pancakeswap.finance/products/syrup-pool/auto-compounding