For a private sale, the participant's addresses must be whitelisted either by project owners as well as by a weighted pool score. A pool weighted score is computed Pool score for a user computed by the staked Amount, and the Interval for the amount is staked. Both the parameters contribute to the score.
The Public sale is open for all participants but every participant has a fixed pool size i.e only a fixed amount they can invest in the pool which is set by the project owner in our smart contract.