field-manager.php file under your
/config directory with the following options available to you. You can also use multi-environment options to change these per environment.
<?php return [ 'cpSectionEnabled' => true, ];
cpSectionEnabled- Whether the plugin's page should be shown in the main sidebar navigation.
You can also manage configuration settings through the Control Panel by visiting Settings → Field Manager.
Available for Craft 3, unlimited use, free forever. Get it from the plugin store.