The specific operations are as follows:
1. Open the wallet you are using (the following operation takes Meetone wallet as an example).
2. Click on "Discover" to enter "Defibox".
3. Select "Add liquidity".
4. Select the market you want to join, you need to select two tokens at the same time, and deposit two tokens in proportion (the following takes the EOS and NDX market-making as an example).
5. Click on "Join market".
6. Enter the deposit amount of any token, and the system will automatically calculate the amount of another deposit token based on the current liquidity pool ratio.
7. Click on "OK" to start market making.