VerifyUnChecked command is used to verify if the checkbox represented by the Locator(Page and Element) is unchecked .
Select VERIFYUNCHECKED command from the action drop down, select desired Screen name, Element key and leave the parameter section blank as shown below:
After completing this step, step will look as below:
Tabular view :
Card view :
If checkbox is found unchecked then this step will pass else this will fail.