Thank you JCL, It is probably this tutorial https://vimeo.com/60440610 .

In case you plan to refresh the description, here the most confusing points for me:
- in the back test, the strategy is "long only", in the video, there are long and short signals
- the traded assets of current Z3 are just three US indexes, no metals nor commodities as stated in the strategy description and video
- the description of the Bar offset "Set this to the trading time in minutes since midnight when trading Z3 assets in other time zones." - does this apply just for simultaneous trading with other strategies ?