This type of question assesses loyalty by asking how likely customers are to recommend your brand/institution to their surroundings.
Net Promoter Score (NPS) is a metric specifically developed to measure customer loyalty, judging by a customer’s likelihood to recommend a product to others.
The NPS flow is specifically centered around the question:
“How likely is it that you would recommend Company to a friend or colleague?”
Customers can then respond on a scale from 1 (very unlikely) to 10 (very likely). Those responses separate customers into three categories:
Detractors (score 0-6), 
Passives (score 7-8), and 
Promoters (score 9-10).
To learn more about NPS calculation, check out our article Net Promoter Score (NPS) and How to Calculate it?
Click the question menu to the left of the Flow creation screen and add this question type to your flow.
You can click on the place that says NPS in the box and write the question you want to ask:
For example,
The "I would not recommend" on the left and the "I would recommend" on the right can also be edited by clicking on it.
You can go to settings of the question by simply clicking on the wheel icon 
inside the question box:
In the Advanced Settings, you can make it required question, which means the question must be answered in order to proceed the flow,
- Required Question: Prevents the completion of the survey without answering the question.
- Default Option: The designated option comes pre-selected.
- You can color the NPS scores for the Kiosk Channel: Shows the options 0-6, 7-8, and 9-10 in red, orange, and green, respectively.
By Element Triggers, you can ask other questions to your customers who respond at a low score.
Let's setup a rule set for the customers who scored 0-6 :
Choose Long Text question type and hide it by the Eye icon: 
Then by Element Triggers, set the rules:
After setting these rules for all options between 0-6, we save our settings with the Save button.
Thanks to this set of rules, customers who score 0-6 can view the hidden question we created.
The customers who score between 7-10 cannot see the question because they are not included in the rule.
