Ehler

Hello. I have installed the BePlumber theme and on the first page (http://themes.muffingroup.com/be/plumber/) there is a offer slider under the title "Recent realizations". i have been lookin in the forum and in your dokumentation and I can not find how to make this? In my back end when I enter the "offer slider Thumb" I can see nothing?? Can you please give me a hint how to make this slider?