Without knowing the specifics, the example you posted is not ready to explain.
@Moke could answer the specific question, since it's his preset.
However, more generally there is a fundamental topic here which is using effects in parallel. The manual isn't really going to provide any input on that other than maybe how to do the routing.
There are many who prefer to put their effects in parallel, primarily for ambient effects like reverb and delay (not the case here).
As I've learned over time from folks here, in most cases the same end result can be achieved with the effect routed in serial (with the proper settings).
There is a particular case where it is useful and settings don't help:
If you want to have delay and reverb but you don't want your delay trails to have reverb on them, and you don't want to add delay to your Reverb. In that scenario, you would put the delay parallel to the reverb.
You might want to do some reading or watch some vids on "series vs parallel effects" to better understand.
Also, note that for most cases, you want to set Mix at 100% for parallel effect blocks and then use the Input Gain or Level control to adjust the amount of effect you hear.
And finally, if you have parallel rows that are active simultaneously that are not ambient effects like I just described, note that each additional row will increase overall output level by 6dB.
