Be careful when using groups because if you forget that your spreadsheets are grouped and then proceed to add or change figures on a worksheet, all of the worksheets in the group will have the same figures. To remove a group, simply click on a sheet that is not in a group. If all of the worksheets are grouped, right_click on any tab and choose Ungroup Sheets. Keep an eye on the title bar prior to making changes and Excel will tell you if the sheets are grouped.
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