on that will not work you have to change in the config file of what ever store you want.. cpane open your files.
your shop/included/config-sites
choose the config files for your store.
under /**
* Layout Settings
*/
look toward the bottom of that group and look for this\
define('CATEGORIES_TABS_STATUS','1'); //Categories-Tabs Menu ON/OFF
and you can turn it on or off ..
i hope that helpss
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