Making a Fixture for Macwash 1915Z 3 groups of colors

The DMX table for this Wash in 23 channel mode says 
CH9 Red first group ....CH13 Red 2nd group ....CH17 Red Third group I guess to make the fixture I just have to put color etc in every Channel but could someone explain me what are this groups for? I I have to program colors do I have to Dimm every group?

thank you

 

in case of multicell devices there's generally several Dimmer.
Dimmer 1 will control first of red/green/blue, dimmer 2 will control second block of red/green/blue etc...

so you'll say
offset a - dimmer - group 1
offset b - red - group 1
offset c - green - group 1
offset d - blue - group 1
offset e - dimmer - group 2
offset f - red - group 2
​​​​​​​offset g - green - group 2
​​​​​​​​​​​​​​​​​​​​​offset h - blue - group 2

you can have a look at Martin/MacAura for an example

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well... I've found the Macwash 1915Z manual and there's no several dimmers.... just zones 
here's a personality (but RESET offset is a bit flacky...)

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Yes, I was going to share you the DMX Table. I guess The channels of the groups just work as virtual dimmer. What means flacky about the reset? can you tell me What can Happen and what can I try?

Thanx a lot!

Flaky means that they don't give much informations....

And please be sure that your DL is up to date.

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Thanx, yes, I'm in DL 4.5.16