Sadly, when you activate ‘‘Simulate Physics’’ on the character, you lose control of it and can’t move. I guess it makes sense. But thank you for the suggestion!
I’ve actually managed to make it work by using Add Impulse on the character movement, but it’s very manual and tedious because I have to tell the direction in which to impulse for each platform.
So I’m still curious if there’s an automatic way to put force/impulse physics on a character, I would find it surprising that there’s no way to do it.