The save button on the Food Ordering tab might be disabled, due to incorrect Lead Time value. Follow the steps below so that the save button is enabled and you can save your changes on the Food Ordering tab.
The Save button on the Food Ordering tab is disabled because the Lead Time is set to zero.
In order to save changes to the Food Ordering feature, please make sure a minimum Lead Time of 5 minutes is set under the Services section since it's a required field. Then, you can click on the Save button to save your changes.
After changing the Lead Time to a value that is either 5 minutes or larger, the Save button should become enabled & clickable.