Master/Cue Headphone Setup

I'm having trouble configuring MixVibes with my headphones to get Master volume in my left ear and Cue volume in my right. Currently I have Master volume coming through on both sides with Cue volume also coming in on the right over the Master volume. I'm new to MixVibes and may just be making a basic mistake, but I've played with different audio configurations from simple stereo to split-mono and haven't been able to get it to work right. I had used Virtual DJ previously, which gave the option to specify which headphone side received Master and Cue volume and I'm wondering if there is a similar or equivalent feature in MixVibes that I'm missing. Thanks in advance!