The Swap and StableSwap tabs, are where you can trade one token for another. It is a user-friendly swap interface, just select the two tokens you wish to exchange.
The liquidity provided comes from Liquidity Providers (LPs) who stake their tokens in the associated 'Pools'. In exchange, they get LP (Liquidity Provider) tokens, which can also be staked to earn REF and other tokens in the 'Farms'.
When you trade (swap) on Ref Finance you will pay the pool fee (trading fee), which is broken down as follows:
For traders, the fee is always taken on the amount paid in. The Protocol and Referral fees translate into LP tokens.
First, make sure that you are connected to Ref Finance with your wallet.