I believe each universe contains only one possibility, or only one way it can ever go ever possibly, etc, and that those are all known by a being there/here, who predetermined it respectively, etc. But now moving into the realm of very, very loose, very, very unprovable/unknowable and highly theoretical theory, etc. Other universes could be another (4th) dimension, and could contain other possibilities, etc, but still all at the same time still possibily, so that you have all possibilities of all that can happen at this time all happening at the same time (or at one point in time) as one additional (4th) dimension possibly. And then all possibilities at all possible times all going on at the same time being possibly a 5th dimension possibly, which would be all possibilities at all possible times, all happening at the same time (which would also include at the same space in time) all happening in or at the same place/space in time always, respectively.
But I am only talking about this universe here right now though, etc, which I believe to be only one possibility, and never excceding any more than just only one possibility among possibilities, if there are other possibilities, etc.
And that if you want to add any other possibilities, then you're talking about adding more universes, or another dimension, etc, and then "at all possible places/spaces in time on top of that", etc, yet another dimension would need to be added respectively, which three dimensional beings cannot know or perceive or conceptualize of yet respectively, etc.
And each time you add an additional dimension, it is supposedly infinite supposedly, etc.
God Bless.