From where you will set the invoice printer type?

There has nice ajax filter option ( Filter by delivery date ) to find pre order list in manager page. Please follow the screenshot:

To use pre order system you need to set some settings from restrofood delivery settings. Please follow the screenshot. After set all settings you will find the date and time select option in checkout page How to hide delivery date and time from checkout page?

RestroFood WooCommerce quick order branch management system depends on WooCommerce plugin. So you have must be installed WooCommerce Plugin before use RestroFood plugin.

Set list type and min/mix required option. If you don’t set min or max required number this items are not required for the product to add to cart.