where is the value of $USE_GROUP_TABS and which file,
how i can find this means
plz help
This is an old question but here is the solution:
To disable menu groups we can do it via the theme configuration
You need to set ‘group_tabs’ => false , in a upgrade safe way ( file - custom/themes/SuiteP/themdef.php ) for a particular theme.
...
'group_tabs' => false, //Check this line
'classic' => true,
'configurable' => true,
'config_options' => array(
...
Thanks,
AlxGr