Elep

<?xml version="1.0" encoding="UTF-8"?>
<form>
    <fieldset name="basic">
        <field name="hcaptcha_type" type="list" 
            label="NR_TYPE"
            description="COM_CONVERTFORMS_FIELD_HCAPTCHA_TYPE_DESC"
            default="checkbox">
                <option value="checkbox">NR_CHECKBOX</option>
                <option value="invisible">NR_INVISIBLE</option>
        </field>
        <field name="theme" type="list" 
            label="NR_THEME"
            description="COM_CONVERTFORMS_FIELD_RECAPTCHA_THEME_DESC"
            showon="hcaptcha_type:checkbox"
            default="light">
                <option value="light">NR_LIGHT</option>
                <option value="dark">NR_DARK</option>
        </field>
        <field name="size" type="list" 
            label="NR_SIZE"
            description="COM_CONVERTFORMS_FIELD_RECAPTCHA_SIZE_DESC"
            showon="hcaptcha_type:checkbox"
            default="normal">
                <option value="normal">NR_NORMAL</option>
                <option value="compact">NR_COMPACT</option>
        </field>
    </fieldset>
</form>