1 MIDI controller + 2 turntables

Gents,
Only the players 1 & 2 can be used for turntables (vinyl) or MIDI controller.
I like to use 2 players with vinyl & 2 players with my MIDI controller (VCI 100) at the same time
How can I solve this?
Thanks for helping.
Regards Pat
Only the players 1 & 2 can be used for turntables (vinyl) or MIDI controller.
I like to use 2 players with vinyl & 2 players with my MIDI controller (VCI 100) at the same time
How can I solve this?
Thanks for helping.
Regards Pat