Quantity Increment & Decrement requires no technical knowledge. Admin control panel setting in which page show Increment & Decrement.

Quantity selectors to grid/list pages, product pages, related product pages…
» Quantity selectors to all Modules (featured, bestseller, latest, special)…
» All Quantity selectors have setting from admin to show/hide
» Support Default Theme
» Increment & Decrement Quantity
» No Override any core files
» OCMOD is used