itch.io

Thanks for playing it! Well, you need to be close to them, hit space and complete the music sequence. Then it will show an icon above it so you can drive it.
Look for the vent on the Left and the one on the right, the black robot is just a threat, but the other two can go through the vents. 

Now.... if you want the solution.... Left Robot to the right vent... middle robot to the left vent...