How to add a null row in sql server2008r2 -

How to add a null row in sql server2008r2 -

i want add together row serves space between info in sql...

id num | owner | time in | time out | <-- space /row 255414 | anne | 7:45 | 6:00 | <-- space / row 141455 | jane | 8:00 | 5:30 |

just add together or pass null values using insert query. if have identity column incremented. or add together row or separate column flag end of grouping of rows.

sql null