The row level UDF in a In-Out works in the same way as that of the Standard Timesheet. The row is for the entire Timesheet period. Hence making a change in the row level UDF on one day affects the UDF value(s) of the previous or future day(s) of the Timesheet. This change does not affect the UDF values of other Timesheets. If you would like to have unique values for each time entry, then you would have to use the Hour level UDF.