hey @M4tr1xN30 ,
Initially partitioning will be at the folder and sub-folder levels, and only for teams. This means that individual files/individual users are not options yet to be partitioned. This will affect all Files currently visible in your Files tool - any files that do not live there are not under this feature! Once the beta is done and we are in GA I will update here with more info. Feel free to DM me as well!
Cam