How to set collision channels for individual bodies in a Physics Asset?

Sorry, I’ve seen this method many times.
But honesty, generating thousands of collision patterns for each object and faction just to avoid colliding with itself is exessive.
If you already have 10 channels, adding one will add 331 collide patterns.
Most of it goes unused, but the amount of work grows exponentially as i add more objects.
So I would like to know how to disable collision for only a single body.