Organ3 user manual confusion

[Beemer2]

I have just received my Organ 3 this week. I am a newbie to Hammond B3 and of course to the Organ 3. The book Hammond Organ Complete has been very helpful in educating me about Hammond and I am looking forward to trying out the many music examples.
The Nord User Manual has been a harder read and despite reading it three times I have unanswered questions.
The difficulty starts:
Page 13:
DB Sync - It says 'press SB Sync to synchronise the Program Mode settings with the physical positions of the drawbars'. There is no further explanation in the guide and so I ask why and when do I have to sync?

Drawbars and LED Graphs - It says 'The settings for Upper Manual A and lower Manual B always correspond to the physical position of the drawbars, regardless of Prog Mode or Preset selection'. What settings?
Page 14:
B3 Init - Use the B3 Init command (Shift + Organ Model) etc. - How can I press Shift and select an Organ Model AND press B3 Init at the same time?

[FZiegler]

Wow, what a tricky instrument! I'm neither a B3 player nor an Organ 3 owner, but want to dive into it out of curiosity.

So, a real B3 has its ways to make sound changes possible: soft ones and hard ones - you can even come back to a previous sound. That's why there are 2 sets of drawbars to select (B3: keys Bb and B on the most left octave with inverted colours, Organ 3: Drawbar Focus buttons on the left panel). A real B3 has another number of sounds hard wired to the other inverted keys, the Organ 3 has 3 Preset buttons on the panel for the same purpose.

While other Nord instruments store every panel button and knob setting to a program, the Organ 3 has a slightly different approach in order to make it less individual but more exchangeable. First of all, there is a Nord B3 program that can't be overwritten (smart idea). And the 3 preset buttons are 'hard wired', too, in the sense that their settings are global. So, what you have to create and select sounds:
- a primary drawbar set (B for the upper, A for the lower manual) - can be stored within a program
- a secondary drawbar set (A for the upper, B for the lower manual) - won't be stored within a program
- three presets for each manual (to be set globally)
- quite a number of programs in the sense of stored values for both upper and lower manual, but for only one drawbar set each to start from

This is much more than you need as a starting point. I'd say: Starting with Dave Limina's Hammond Organ Complete won't involve much more than using primary and secondary drawbar sets.

This is a different thing if you start playing different styles and want to switch between them within seconds. As on stage. That's where programming is needed. And as far as I understand, that's what you need DB Sync for: setting a drawbar set and 'sync' it in the sense of transferring the physical drawbar settings to the program's drawbar values. (not totally sure, though)

The secondary (outer) drawbar sets don't have LEDs as they alway are played with the physical setting. They are not stored within a program.

B3 Init means you can easily start creating a new B3 setting from whatever setting before (pipe organ, Farfisa etc.) just by pressing [Shift] plus the button for [Organ Select]. It's not meant to select any other organ model by that combination. It's something you may need for a rehearsal or on stage when you are meant to create a new B3 sound in 3 seconds.

[analogika]

Say you have a preset with drawbar settings, but also bass sound, specific EQ, a particular delay and amp settings/distortion.

You want that preset except with different drawbars to switch to on the fly. So you'd need to save an additional patch.

Or, you can just set up those secondary drawbar settings, recall the patch, and "sync DB" when you need them. Recall the patch to switch back.

Saves you a program slot.

Not sure if that's the realistic use case, since, coming from real Hammonds, I'm a "set up your organ sound and do everything with live drawbar settings and FX" guy, but that's how I imagine it.