Outlining

Hi Saroja, Thanks for the post, in answer to your question;
Outlining is a means of viewing levels of detail as required by collapsing or expanding to hide or show information. You can identify subtotals and hide or collapse detail so that only subtotals appear on the screen. Outlining will also allow you to make detail data disappear so that only the higher level subtotals remain visible when you are using larger worksheets. An outlined Worksheet will print exactly as it appears on the screen. This makes Outlining an extremely useful presentation tool.
There are two types of Outlining; AUTOMATIC OUTLINING, which you would use when you have used functions to summarise your data and MANUAL OUTLINING which is used when your data does not contain functions, but instead contains values only.

Automatic Outline
You could use an Automatic Outline for numeric data organised into specific groups