How to set the time zone?
To work time and date properly with your time you need to settings restrofood plugin timezone from restrofood settings and WP admin settings -> general
Restrofood settings option:

WP admin settings option:

To create google API key visit the link https://console.cloud.google.com/ and login with your google access. After that, you need to create a project for API credentials with some Library permission. Follow the screenshot below: Library Support: Key Restrictions:
RestroFood WooCommerce quick order branch management system depends on WooCommerce plugin. So you have must be installed WooCommerce Plugin before use RestroFood plugin.
Item visibility is divided into several mealtimes- Breakfast, Lunch, Dinner, Snack, etc. The item which is being set for breakfast will not be visible as lunch, dinner, or snacks. The same goes for other mealtimes. Have a look at the below-attached screenshots. You’ll get a complete overview.
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.
After Cooking Complete the order need to assign delivery boy to order delivery. There has a select option to assign delivery boy in the branch and kitchen manager page order view popup. Follow the screenshot below.
No products in the cart.