The “Visible Condition” field determines under what conditions the form field will be visible.
So say there is a field called “Country” and one called “State” and you only want the “State” field to show if “Country” is set to “Australia”, you would put this visible condition for the “State” field:
[wt:Country]=='Australia'
Note you need to use double = and single quotes around Australia
If you want the state field not to show if the country is Australia, you would set the visible condition of the State field to
[wt:Country]!='Australia'
!= means not equal to.
So it’s:
[wt:Name of field to test the value of] == 'Value to test'
Or
[wt:Name of field to test the value of] != 'Value to test'
I would ignore the setting field as this interacts with the database and you don't have access to it.