How to change speed in testimonials?

Hi, I’m new here, I need help, please, anyone know how I can change the speed of exchange of testimonials? I have tried to paste code in Custom Java, quoted in another topic but it did not work (even after clearing the browser cache) and has no option to change direct on the page. Please, can anyone help me? Thank you!


Did you try to apply solution from this topic?

Kind Regards, Roman.