How to simultaneously Read scope 0 and scope 1 of elvis ii?

Dear all:

  I am a user of LabVIEW 2010. Recently, I have downloaded the lockin start up kit. I want to use ELVIS for the signal input. I want to input the data signal and reference signal using scope 0 and 1. But in the front panel of the demo lockin program, I only can assign 1 scope for input. I have see the back panel of the program, the signal from the DAQmx is 2d array. Therefore, all scope should be assigned. How I can assign both scopesHo in front panel?