To turn it on, start up the template and connect to the jupyter link. Then just flip the Offset_Noise variable to "True" and increase your total steps by 10-20% - that's it!
Apparently this can get you some really awesome outputs in the realm that SD usually can't touch ( very dark and very light images). For more on the research behind this, you can check out this research blog post:
and this YouTube video
The results look pretty stunning, so go check it out yourself!