Anyone can run a market maker bot to fill incoming orders. The market maker bot can be found in GitHub: https://github.com/ZigZagExchange/market-maker. Explanations and details on how to run the bot are in the README.
If you need a more simplified step-to-step explanation, please continue reading. If you still run into issues after this guide, join our Discord (discord.gg/zigzag). We're also giving out Discord roles ('MM bot') to anyone that is running a market maker. Join Discord to claim your role!
Note: every now and then you will need to update your market maker. Be sure to check up on the GitHub repo (https://github.com/ZigZagExchange/market-maker) and claim your 'MM bot' role on Discord to receive announcements.
Requirements
Activated zkSync account
Ethereum private key of that account
Funds in that account corresponding to the pairs you want to market make
CryptoWatch API public key (free for limited time)