Headers and footers in a worksheet - Microsoft Support
You can add headers or footers at the top or bottom of a printed worksheet in Excel. For example, you might create a footer that has page numbers, the date, and the name of your file. You can create your own, or use many built-in headers and footers. Headers and footers are displayed only in Page Layout view, Print Preview, and on printed pages.
Accessibility best practices with Excel spreadsheets
This topic gives you step-by-step instructions and best practices for making your Excel spreadsheets accessible and unlock your content to everyone, including people with disabilities. You learn, for example, how to work with the Accessibility Checker to tackle accessibility issues while you're creating your spreadsheet.
Insert page numbers on worksheets - Microsoft Support
Set a different number for the starting page. To number all of the worksheet pages in a workbook sequentially, first add page numbers to all worksheets in a workbook, and then use the following procedure to begin the page number for each worksheet with the appropriate number.
CHOOSE function - Microsoft Support
This article describes the formula syntax and usage of the CHOOSE function in Microsoft Excel. Description. Uses index_num to return a value from the list of value arguments. Use CHOOSE to select one of up to 254 values based on the index number.