Thank you, I have been trying exactly that ... selecting a block and using the joystick to move it down. It does all you say it does except I can not move the Merge down more than one level, essentially off the guitar path and on to the mic path. I have not found a way to bring my mic path up to the guitar path.
I need two paths, one for guitar and one for vocal, each processed separately and then merged into one (as it says I can on pg17) just before the looper, so I can loop them together.
Helix Manual Pg 17...
"2 into 1 Move the Split block down to path B. The Split block shifts left and a duplicate Input block is created: This new Input block can be assigned to a completely different input. This routing can be used for mixing a guitar and vocal, or the models and magnetic pickups in a connected Variax guitar, each with their own processing blocks