Help: Midi mapping to 8 channels

[opabert]

Hello to you all, 
my name Bert age 70++  English not my native language.  I send email to support but not reply on that. Have very large setup with  keybords,  2 sequencers and in total 10x  differ mono synth.

For sometime i use retrokits midi router for my MIDI routing and this week buy MRCC because of the connectivity, cable management and the ON/OFF buttons per MID channel
For days try figger out how routing my gear who not doing what i able do with my retrokits.
MRCC MID DIN INPUT -1   have a keybord / Sequencer and all my SYNT use differ midi channel input like this:
SYNT-1 input set to MID CH-1
SYNT-2 input set to MID CH-2
SYNT-3 input set to MID CH-3
In channel mapping, it seem not possible mapping the MID keybord or sequencer channel-1  to  8 synt differ MID channels out. Only, work when all 8 synth manual set to same MID channel in this case MID channel 1.
The channel mapping have no "OUT-ALL")

in short terms,
Possible to connect my MIDI keybord or sequencer run over input channel-1 MRCC MID mapping to output 8 differ MID channels?

Thank you