Where to put the images for image slider???

Maybe it’s my lack of experience with WP themes, but I cannot seem to find where to put the images for the image slider. I found where the sample image goes by viewing the image in a new page, but there does not seem to be a link in the admin to upload it to replace the sample image. I posted a qeustion on the forum but no answer after 4 days. It’s a nice theme, but I guess I’ll have to move on and find one I can work with.