Browse the Manifest help
Header, footer and overlays
Age verifier
Ask visitors to confirm their age before they see the shop.
WhereThe Overlays group → Add section → Age verifier.
In the Overlays group. The shop is hidden behind a question that cannot be dismissed without an answer. Confirming is remembered in that browser for the days you set (1–90); declining shows a message in place of the shop.
In the editor the check only opens while its section is selected, so the rest of the shop stays editable.
NoteAn age check on the storefront does not replace the rules for selling age-restricted products. Check the law for the products you sell and the countries you sell to.