Multiple render targets support in a post-processing pass?

Is it possible to have a postprocessing pass that outputs to two render targets? From what I see, there’s not. In which case:

How could I modify the engine to support that? Any hints/pointers?

Thanks.

That’s a question I would like to know about, as we now hit the Engine 4.20 and I need this for some postprocess effects…

+1. Would love this as well…