Calculate difference between two date/time values using current row minus previous row

HI Kumshan450

If you add the following calculated column to your table, it will show the number of seconds between the current and previous row, which you can then use in an IF statement to 

Seconds Diff = 
VAR StateName = '2018'[State Name]
VAR BranchName = '2018'[Branch Name] 
VAR CurrentCollectionDTM = '2018'[Collection DTM]
VAR PreviousCollecitonDTM = 
            MAXX(
                    FILTER(
                        '2018',
                        '2018'[State Name] = StateName &&
                        '2018'[Branch Name] = BranchName && 
                        '2018'[Collection DTM] < CurrentCollectionDTM
                    ),
                    '2018'[Collection DTM]
                    )
RETURN IF( DATEDIFF(PreviousCollecitonDTM,CurrentCollectionDTM,SECOND)<60,1,0)