Drag the slider widget in the phone area. Click the slider in the phone area to configure.
By default, the slider question is configured as a Net Promoter Score type question.
You can change the title of the question, the max & min values of the slider. Make sure to update the max/min legend if you change the max/min buttons.
If you want to change the slider representation to a star representation toggle the 'Use Stars' button under advanced.
You can set the max number of stars. The min number will always by 1.
When a person responds they will return a score between 1 and max. 0 stars is not possible.