1. Select WPForms from the left manu and then click 'Add New'
2. Click 'Newsletter Sign Up Form'
3. Click 'Hidden Field' Button
4. Hidden Field shows at the bottom of the form
5. Click 'Hidden Field' and then a menu shows at the left side the form
6. Give a name for your Hidden Field and then Click the 'Show Smart Tag'
8. Save it and Now You are Ready
9. You can see your populated UTM Fields under entries