Hello,

I assume you are talking about the home slider:

You will need to create an alternative override for the slider (or hack the existing one, which is not recommended).

Copy this file:
template/html/mod_jkit_item/home-slider.php
template/html/mod_jkit_item/home-slider-custom.php

Edit line 19 data-cycle-timeout="8000", replace 8000 with your custom time (milliseconds).

You need to select the new layout in the module options, select home-slider-custom in Alternative Layout param in the module options.

Kind Regards