Unresolved

TD ability not working

Hi, i'm struggling to understand how the ability of my TD works. I have 2, one with the fuel ability and one with the design ability ("progettazione" in italian). For the fuel ability, it's pretty clear it works, since in free practice i see 2 decimal numbers. But the other one doesnt seem to work. The online guide says it should give me 3 extra points per race (legendary ability), but i still only get the 31 i get from the design facility. What is the issue?

The TD adds design points to a certain attribute, just like a supplier does. It should show up in cars page, research tab for instance, at the bottom: bonuses. That’s where your TD points will appear

I see the bonuses, but it doesnt say what the TD adds. Also, how is the increased attribute picked? At random?