Over 18 Confirmation

Hopefully a simple question as I am building a website for an Alcohol selling website and one of the last few things to do is I need to do age confirmation when people go to the home page with simply 2 answers, Over 18 or Under 18. The first lets them into the site and the other goes to a single page explaining why they can't access the site. 

I just can't find anywhere to set up the pop up question?

1 hour ago, Stardust22 said:

I am building a website for an Alcohol selling website and one of the last few things to do is I need to do age confirmation when people go to the home page with simply 2 answers, Over 18 or Under 18.

There isn’t a built-in age-gate feature but there are a number of third party add-ons available. Some of these require an ongoing payment subscription or have a limitation on the number of site visitors but we produce one that is a one-off purchase with no limitations. It comes with two buttons and you can change the wording to suit your needs. You’ll find full details here: https://sf.digital/squarespace-age-popup.