you do not have to schedule 6 jobs (or the same process chain multiple times), that's what Martin is trying to tell you
you simply schedule the chain to run "hourly" and then deal with the exceptions via the "Decision..." process type
you can use CHECK_IF_WORKING_DAY to check whether you're in the weekend or not (providing you pass a correct factory calendar id to the function module or you could use DATE_COMPUTE_DAY and check whether the value is <> 6 & 7)
I know the formula editor is not "as easy" as the ABAP editor (it should actually be more clear - go figure), but I'm sure you can find how to use the above and "formulate" your logic by reading through the help