The IsTasksTabEnabled setting controls whether or not the Tasks tab appears on the order details screen.

The Tasks tab shows any services with a workflow or missing price, so just the services that need attention.

Once the Task tab is enabled, it is possible to combine the Services tab and the Tasks tab into one. To do so, set ShowAllHandlingOrderLinesInTasksTab to 'true'.

Once combined, open tasks are shown at the top of the screen, and handling order / charges for services are shown below.

For a separate Services Tab, set ShowAllHandlingOrderLinesInTasksTab to 'false'.