how to read two ADC channel at a time (SAEED)

Hi I don't know how to read ADC channel 2 and 3 at one time. I have did it in MPLAB X but here, in harmony, is so much harder!!this is my code but it is not good!I appriciate any help! PLIB_ADC_Disable(ADC_ID_1);
// ADC setup - ouput in integer form..