You are looking for a solution to synchronize data between your online website and your local store; you are looking for a quick solution to manage your cafe/restaurant. OpenPOS is a must have Plugin to do that.

Demo
https://codecanyon.net/item/openpos-a-complete-pos-plugins-for-woocomerce/22613341

Download
https://www.filecad.com/ilcC/Openpos-v3.4.8---WooCommerce-Point-Of-Sale-(POS).rar