Is there is a way to custom group rows in ag-grid-react?

I need to move "packages" into the right objects in data range. Object and Package are different objects. The Orange area in picture below is a dynamically generated group based on packages that doesn't fit in any object data ranges. Package data should be editable, and after date change it should jump into the right object.

I need to build nested table like this: Driver -> Object -> Package

What is the best way to do this? I have tried rowGroup in column definition but I cannot find any customization there, only works for whole column.

Object Model looks like this :
 dateFrom:Moment,
 dateTo:Moment,
 driverId:string
Package model:
 date:Moment,
 driverId:string