You can use the Fill command in the Editing Group on the Home ribbon bar to fill information across worksheets when they are grouped. For example, if you add a few worksheets to your workbook and you can to copy parts of one worksheet to another, you could use copy and paste, however, this could take several operations to perform. By grouping the worksheets and using the fill command, you could quickly copy parts of the original worksheet to the new worksheets inserted into the workbook.
How does Excel store Worksheets? Worksheets are saved in an Excel file called a workbook. These workbooks are what Excel uses to collectively organize all the different related parts of many different related worksheets as well as the related charts, graphs and various other objects within Excel.