Unreal engine audio workflow

Hi everyone I would really like to know in a generic situation of a small team, how does a producer/composer integrate in the unreal workflow?
Does he eventually need to learn how to use unreal engine audio system? What if he doesn’t have the time or the willingness to do that?
Does he just compose/produce and lend the material to some one of the project with UE experience which will improvise as an audio engineer mixing and polishing everything?
I’m sorry if it’s a stupid question but I haven’t found anything meaningful on the internet.
They all speak about big companies pipelines where obviously there are many people involved at different level.