This can be done based on custom development. 

it will be available with Linga Driver app. The app will be available by end of this week. 

https://www.lingaros.com/restaurant-operating-system/linga-driver/

This was fixed after the new pax file update. 

Hey Jesse, it is possible in a conversational mode, when you unselect the modifier it turns to "No", please test it. 

You can add those items in a special category and restrict Category from employees. Allow only Admin/Manager access. 

Hey Richard, 

It is already available under Backoffice --> User Management --> Roles --> Edit Role --> Change permissions --> Update & Publish. 

Can you please provide a screenshot to understand the issue? 

Hey Ana, we do have Integration with Quickbooks through Shogo. 

https://old.shogo.io/partners/linga/

changed the time window to 15 mins interval. 

We have changed the immediate time to 15 mins from order place time and also changed the clock intervals to 15 mins instead of 5 mins.