Some midi routers can have midi merge, like the JL Cooper MSB plus, others like the Midisport are more of a midi 8 X 8 midi interface.
If the OP would like to post with their progress I’m sure we’ll chip in to help 
Some midi routers can have midi merge, like the JL Cooper MSB plus, others like the Midisport are more of a midi 8 X 8 midi interface.
If the OP would like to post with their progress I’m sure we’ll chip in to help