ETF in-kind creation and redemptions

hi, the 2 big advantages of the in-kind creation/redemption process are: - lower tax liability for remaining shareholders, because no holdings need be liquidated, possibly realising capital gains - ETF shares trade near NAV it is this 2nd point i don’t really understand. there is this authorised market maker who can create creation units by depositing shares (those tracked by the ETF) and in turn given ETF shares by the fund (vice versa for redemptions). somehow by doing this he is supposed to exploit mispricings…keeping the share value close to NAV. but i don’t get how? please enlighten me…

Supose the basket of securities is trading for lower than the ETF units. Any market-maker would just pick up the individual securities, package them and sell them as an EFT unit.