In this example, let's hide the State field unless Country is selected as "United States."
Go to Marketing Activities.
Select your form and click Edit Form.
Select the field you want to hide/show dynamically and click the link for Visibility Rules.
Find and select the field you want to build a condition around.
Select the operator.
Select the value(s) to look for, then click outside of the drop-down.
And that's it! Now when people fill out this form and select United States for Country, the State field will dynamically appear with the choices specified.
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