Hello,
The sliders themselves don't have the ability to set an alt text. If you are using our Image and Content Fader (which most of our templates use) that is because the sliders don't actually use images at all, they are background images on a div which can't use alt tags. The background approach allows the images to resize and fill the correct areas on responsive sites. Other sliders simply have one or two images and the script itself changes the source of the images, so the alt tag has to be uniform for something like this.
Thank you so much for your replay. I thought it is the case. Just wondered about file I can edit to assign uniform alt
I did in the past few times with other themes and - not the best approach how alt should be used but in case of couple of images it is not big drama and still ad to SEO
Again thank you for your time !