Step 1: Go To Your Price List
Click on the price list category with the item you want to edit.
From the product list, go to the item that you want to edit and click on the three-dot icon on the right. From the menu, click on Edit.
Step 2: Show More Options
From the Store Pricing page, click on the blue Show More Options text.
Step 3: Edit and Save Product Details
In the Max Quantity field, type in the max number of items that can be purchased per order (e.g., 1, 3).
After adding the required details, scroll down and click on the Save Product button.