2 PIR sensors to one input

Hello,

This is not an arduino project, please move if not allowed.

I am building lights for my stairs and I purchased the below controller with 4 PIR sensors, however, for my purpose I only need 3. 2 sensors need to trigger the lights at the bottom of 2 staircases (connected in parallel) the other will trigger LED lights when descending. Right now I have it working with just two sensors, one at the bottom and one at the top, but as I said before, I have 2 staircases that go up to one landing and I want the lights to go on no matter which staircase I choose.
I tried to connect PIR sensors in parallel but it causes a loop of constant “motion” and all the lights stay on all the time, so that didn’t work. I measured the voltage between ground and signal wire and it’s at 3v until motion is present. It drops lower once the motion is sensed and then goes back to 3v.
Any idea what I can add to have the bottom two sensors work like a three way switch? I was reading and it looks like either two diodes connected to both signal wires or two transistors, but I am not an expert and don’t know what goes where.

The answer is in the attached pic

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