Table value from previous row

I was wondering if there was any established ways to retrieve a value from a row in a local documents child table?

Example: Timesheet data is being entered, and to avoid repeat trips to the timedate picker, the additional rows from_time is equal to the previous rows to_time (assuming a chronological entry)

Could be useful for multiple repeat procedures in the timesheet table particularily

Sorry as this feature is not configurable for now. Can you please create Github Issue for this suggestion?