system.xml

<?xml version="1.0"?>
<!--
  ~ NOTICE OF LICENSE
  ~
  ~ This source file is subject to the General Public License (GPL 3.0).
  ~ This license is available through the world-wide-web at this URL:
  ~ http://opensource.org/licenses/gpl-3.0.en.php
  ~
  ~ DISCLAIMER
  ~
  ~ Do not edit or add to this file if you wish to upgrade this module to newer
  ~ versions in the future.
  ~
  ~ @category    Maxserv: MaxServ_YoastSeo
  ~ @package     Maxserv: MaxServ_YoastSeo
  ~ @author      Vincent Hornikx <vincent.hornikx@maxserv.com>
  ~ @copyright   Copyright (c) 2017 MaxServ (http://www.maxserv.com)
  ~ @license     http://opensource.org/licenses/gpl-3.0.en.php General Public License (GPL 3.0)
  ~
  -->

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
        <tab id="maxserv_yoastseo" sortOrder="120" translate="false">
            <label>YoastSEO</label>
        </tab>
        <section id="yoastseo" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
            <label>SEO Settings</label>
            <tab>maxserv_yoastseo</tab>
            <resource>MaxServ_YoastSeo::admin</resource>
            <group id="general" translate="true" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>General Settings</label>
                <field id="company_name" translate="label" type="text" sortOrder="15" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Company Name</label>
                </field>
                <field id="sitelink_searchbox" translate="label" type="select" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Enable Sitelink Searchbox?</label>
                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                </field>
                <field id="schema_sameas" translate="label comment" type="textarea" sortOrder="30" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Other URLs</label>
                    <comment>Enter alternate URLs which identify your store. E.g. your store's Facebook page. One URL per line.</comment>
                </field>
            </group>
            <group id="fields" translate="true" sortOrder="15" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>Fields</label>
                <field id="enable_keywords" type="select" translate="true" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Enable Keywords</label>
                    <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
                </field>
            </group>
            <group id="facebook" translate="true" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>Facebook Settings</label>
                <field id="facebook_app_id" translate="label" type="text" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Facebook App Id</label>
                </field>
                <field id="facebook_admins" translate="label" type="text" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Facebook Admin Ids</label>
                </field>
                <field id="facebook_pages" translate="label" type="text" sortOrder="30" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Facebook Pages</label>
                </field>
            </group>
            <group id="twitter" translate="true" sortOrder="30" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>Twitter Settings</label>
                <field id="twitter_company" translate="label" type="text" sortOrder="20" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Company Twitter Account</label>
                    <comment>Full account name, e.g. @company</comment>
                </field>
                <field id="twitter_user" translate="label" type="text" sortOrder="30" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Content Manager Twitter Account</label>
                    <comment>Full account name, e.g. @content_manager</comment>
                </field>
            </group>
            <group id="templates" translate="true" sortOrder="40" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>Analysis Template Settings</label>
                <field id="analysis_templates" translate="label" sortOrder="50" showInDefault="1" showInWebsite="1" showInStore="1">
                    <label>Analysis templates</label>
                    <frontend_model>MaxServ\YoastSeo\Block\Adminhtml\Config\Form\Field\AnalysisTemplates</frontend_model>
                    <backend_model>MaxServ\YoastSeo\Model\Adminhtml\System\Config\Backend\AnalysisTemplates</backend_model>
                </field>
            </group>
            <group id="advanced" translate="true" sortOrder="50" showInDefault="1" showInWebsite="0" showInStore="0">
                <label>Advanced Configuration</label>
                <field id="product_seo_attribute_group_code" type="text" translate="label" showInDefault="1" showInWebsite="0" showInStore="0">
                    <label>Product SEO attribute group code</label>
                </field>
            </group>
        </section>
    </system>
</config>