Conditional logic allows you to show or hide form fields, sections, or entire form sections based on certain conditions or user input. It enables you to create dynamic and interactive forms that adapt to the user’s selections or responses.

Installation and settings plugin

1. Require Contact Form 7
2. Installation
3. New form

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Require Contact Form 7 – top

1. Download: https://wordpress.org/plugins/contact-form-7/

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Installation – top

1. Upload the add-to-any directory to the /wp-content/plugins/ directory.

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Settings conditional field – top

New contact form -> click the button “Group logic”

Just wrap the content with [group group-name] … [/group] tags.

E.g:

[group group-1]
Your Email (required)
[email* your-email]
[/group]

[group group-2]
Subject
[text* your-subject]
[/group]

Then Go to tab “Conditional logic” and setup