Product Quantity Selector Not An Option in Theme Settings

Hello! I recently switched to the Be Yours theme and there is no option in the theme settings or builder to add a Product Quantity field to the product page. The only option currently would be for customers to click ADD TO CART 5 times to add 5 of the same products. We would like a +/- box with a number field to type in a quantity (there is a potential customers could start adding 50 of the same product to cart for tiered discounts).

It took 1 hour to find it. Here is the solution.

You should go to customization and click on product template and then click on “Buy buttons” You will find a checkbox at right side. Just enable that.