Problem with lost detail tabs

Hi,

I had found it it was a setting I had missunderstood and forgot about it:

the setting is:

Kiss controll panel => Configuration => Lists => Ads detail style: Default tabbed view.

Hi,

I had lost somewhere the tabs in the add dettail view an I cannot find the right setting to repristinate them.

Can you please give me a hint?

Thank you for your kind help.