Add ecommerce tracking to code

Hello

Can somebody tell me how I can add ga(‘require’, ‘ecommerce’, ‘ecommerce.js’); to the tracking code with the plugin ?
I have enabled all ecommerce tracking in Google Analytics but I need this line in the tracking code. I don’t have WooCommerce in my system so I can’t install a plugin that handles ecommerce tracking for that.

https://wordpress.org/plugins/google-analytics-dashboard-for-wp/