there is circuit in Attachments and I need another circuit to connect between switch S1 and terminals from 1 to 8 every one or two or three seconds or thus , please if anyone found this circuit , I need it .
So you want a circuit to automatically cycle through the different switch positions at a rate of one position a second? I'm confused as to what it is exactly that you are trying to do.
Not a very informative data sheet but here you go: