How to set up a Display If conditional field?

How to set up a Display If conditional field?

You may want to ask an additional question that is conditionally based on the response from a previous question.

You may only set a Display If condition on a field that has been previously responded to and that exists on the same form. For example, you cannot set a submission question based on a field value from the contact profile form.

Let's use the example of a logical form field question of "Have you presented before?" If the person selects the option "Yes", an additional field will appear. For this example, that additional hidden field will be "Where and when?".