Counter Input Channel Terminal Configuration NI USB-621x

I use NI USB-6216-BNC in a Data Acquistion Toolbox environment and connect it to X4 Encoders. When I start a session and connect the sensors they default to a read-only pin configuration. However the hardware says it supports flexible routing of the PFI pins for counter operations. I would need to adjust these Terminals to correspond to other PFI pins.

 counter_ch1 = 
      TerminalA: 'PFI8'
      TerminalB: 'PFI10'
      TerminalZ: 'PFI9'
 

counter_ch2 = 
       TerminalA: 'PFI3'
      TerminalB: 'PFI11'
      TerminalZ: 'PFI4'