1. Open the Block Library and add an ST100 block from the "Store" category to the page. Open the Settings panel of the block and ensure that the "Open cart after product pick" checkbox is selected—this way, a pop-up with an order form will appear when the customer clicks on Buy.
2. Add a block with a product card from the "Store" category to the page.
3. Connect a payment system
to your website in the Site Settings → Payment Systems.