how to use Group By (Day) in RDLC Report

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RDLC

hi,
i have a report that shows Monthly attendace of employee..
Each day has 2 or more than two entries for a employee , 1 when he signin and the other when he leaves
i have to use Group by Days like this,

Note:
INOUT 1 = TimeIN
INOUT 2 = TimeOut

TID ATTENDANCEDATE EMPID INOUT

01 nov 2010

37219 2010-11-01 09:01:00.000 0000000001 1

37109 2010-11-01 18:02:00.000 0000000001 2

02 nov 2010

37219 2010-11-01 09:01:00.000 0000000001 1

37109 2010-11-01 18:02:00.000 0000000001 2


37219 2010-11-01 09:01:00.000 0000000001 1

03 nov 2010

37219 2010-11-01 09:01:00.000 0000000001 1

37109 2010-11-01 18:02:00.000 0000000001 2


i have use =Fields!AttendanceDate.Value in Parent Group and Included Group Header

The Problem is the report is only showing 1 record in each group..
please tell me how i can do this?