I figured it out today. I needed to tie the secondary black line across all three switches. The red line uses the screw on the side of the HS-210 and the other two work in parallel as I expected. My...

@B.Will If only I had that foresight when I started. Thinking back on it, I believe the black line out of line 1 was tied to 2 and 3. Will take another kick at it tomorrow morning.

I'm trying to install three wifi switches for the lights in my kitchen. With there only being a single set of switches, I thought it would be easy. Here's the breakdown of what I have in the box Line...