Which wallet address to use when adding Liquidity thru Pancake swap contract?

Hi guys,

When adding Liquidity by writing pancake swap contract (newLiquidityETH) what do we set for the wallet? Is it the pair that’s created on deployment? The owner wallet? Or a new LP wallet?

Also what’s the difference between doing it this way and going thru the pancakeswap front end? Just trying to answer my own question, I’d assume it’s because the pair is already created and this would create a new pair? Therefore that leads to my first question and if it’s the pair address I’m meant to input?

Just trying to sense check.