You can run the flows and scenarios in the “Debug” or “Productive” mode.
"Debug" mode will display the Maintenance window at runtime when execution runs into failures.
“Productive” mode will not require user interaction during execution. In case of a failure the execution of the flow will be finished (and will proceed with the next flow, if you are running the scenario). You can see the result in the Run logs after the execution is finished.
By default flows/scenarios will run in "Productive" mode.
How to define the execution mode
You can defined execution mode:
On a flow level - when starting the Automated or Manual tester from the dropdown arrow on the Run button.
On a scenario level - when starting the execution by clicking on the Run button.