Multi-Row Formula reads values from nearby records. A reference such as [Row-1:Change] means the previous record's Change field in the current group. Order the stream first, keep each group together and set a deliberate value for a row that does not exist. Otherwise the first record in a team can accidentally borrow meaning from a different team.
Multi-Field Formula applies one expression to several selected fields. [CurrentField] refers to whichever selected field is being processed. Choose whether the outputs replace the original columns or use a prefix or suffix to create new columns. These are separate tools: one works across records and the other works across fields. Check both the boundary records and the output names so the calculated values can be traced to their inputs.