Currently votes are managed on snapshot.page and are based on SushiPowah.
SushiPowah is a voting metric, where you get 1 vote per 1 SUSHI-ETH SLP token you have locked into the sushiswapclassic.org/farms
What is the process for proposals turning into code?
It is currently being developed and proposed.
But after a community vote takes place, the multisig signers must sign the transaction to make it live.
[More will be added here as the governance process develops]