<?php
  //Einbindung in die Select-Box des Komponenten-Konfiguration zum einfachen Wechsel zwischen Komponenten
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTcaSelectItem(
  'tt_content',
  'CType',
   [
     'LLL:EXT:mrm_be/Resources/Private/Language/locallang_ttc.xlf:mrm_be_cm_chatbot.title',
     'mrm_be_cm_chatbot',
     'mrm_be_cm_chatbot_icon',
   ]
 );
  
 //Einbindung in das TCA des tt_contents
 $GLOBALS['TCA']['tt_content']['columns']['pi_flexform']['config']['ds'][',mrm_be_cm_chatbot'] = 'FILE:EXT:mrm_be/Configuration/FlexForms/chatbot.xml';
 $GLOBALS['TCA']['tt_content']['types']['mrm_be_cm_chatbot'] = [
   'showitem' => 'CType;;;1-1-1,pi_flexform;LLL:EXT:mrm_be/Resources/Private/Language/locallang_ttc.xlf:mrm_be_cm_chatbot.title,',
 ];