With Custom MIDI you can cutomise the MIDI messages for each one of your moovments. You can choose between a Continuous Controller or Pitch Bend message, in which you can customise the MIDI Channel for both. You can choose up to 16 different channels, but it's worth noting that some synthesisers may ignore the channel message.
You can setup a total of 16 separate and individual Pitch Bend commands (1 on each channel). The Pitch Bend is a more accurate Continous Controller, capable of decimal point values (0.1, 0.2...1.1, 1.2, etc.) rather than absoloute values (0, 1, 2, etc...).
For Continuous Controller messages you can also customise the Control Number. On each channel you can set 127 different control numbers, meaning you can setup (in theory) 2032 separate and individual Continuous Controller moovments (127 on each channel). However we doubt this will ever be necessary!