After you create the group, the word "group" appears in the title bar of the workbook. Once they are grouped you can format one worksheet and all of the worksheets will have the same formatting. You can insert a row in a worksheet and the same row will be inserted into all worksheets. This is a great tool when you need for all of your worksheets to have the same formatting.
One of the features of Excel that is often overlooked is working with grouped worksheets. When you group the worksheets within a workbook, you can perform operations to several worksheets at one time. This eliminates the necessity of doing the same operation over and over to different worksheets. To group worksheets which are next to each other in the workbook: Click on the sheet tab for the first worksheet. Hold the Shift Key. Click on the last sheet tab to be included in the group. To group worksheets which are not right next to each other: Click on the sheet tab for the first worksheet. Hold the Control Key. Click on each sheet tab to be included in the group