I have added new input fields to the page properties (below the categories):
TCA/Overrides/pages.php
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addToAllTCAtypes(
'pages',
'--palette--;My palette label;eventdetails',
'1', // List of specific types to add the field list to. (If empty, all type entries are affected)
'after:categories' // Insert fields before (default) or after one, or replace a field
);
// Add the new palette:
$GLOBALS['TCA']['pages']['palettes']['eventdetails'] = array(
'showitem' => 'event_location,event_organizer,event_additional_info'
);
The tabulator label "Category" from LLL:EXT:core/Resources/Private/Language/locallang_tca.xlf:sys_category.tabs.category is now no longer suitable (I would prefer "Event properties") . Is it possible to overrite sys_category.tabs.category somehow?