To make workbook more and more effective and to add more and more varied data and formulation, Microsoft has an option, available in Excel 2016 – like the previous versions of Excel – which allows you to add any number of worksheets as allowed by the the available memory.
The mechanism to add the worksheet is available at the bottom of the workbook.
Just click the ‘+’ button at the left of the sheet name and a new worksheet is added. You may add additional worksheets by simply clicking the ‘+’ button till permitted by memory. You may change the name of the worksheet at per your requirement and convenience though their default name is ‘Sheet(Number).