So this is the problem !
After you've generated the inj , you have to click on the little arrow on the right of the name of the channel ( displayed in red ) . You'll have a long list and you must choose a PBMCC_  channel ( the number after is not very important , for ex PBMCC_12 ). PBMCC channels are for community's morphs and PBMDC channels are for DAZ morphs - this is just a convention . Do this for every body part - head , neck . You may put the same name for the both channels , it doesn't matter , the head has it's own PBMCC_12 , the neck has its own PBMCC_12 etc ...
These are the empty channels that you can use for custom morphs .

In fact , if you uncheck "auto channel assignement" , the software assign a channel but leaves you the possibility to change it .

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