Making specific products visible only on Point of Sale but hiding them on Squarespace website

Site URL: https://www.gillettecamels.com

I manage a website for a high school Booster Club. They would like to sell specific products on their website, but not their full inventory. They would like to access their full inventory at events while using Point of Sale on the Commerce app. If you view the website you'll see memberships and stencils, but they also have apparel and concessions for events.

I know I can make products visible, hidden, and scheduled but it seems like A LOT of work to schedule visibility for every school event of the year.

Any awesome solutions?

Did you ever find a solution? I have a similar need. A product I sell only at local pop-ups and not online.