You can convert an Excel Spreadsheet into a Word Document by two different methods- Use copy-paste or Insert it as an object. Learn how!

Microsoft Word has a date field, but it's not easy to use in an expression. If you need to update dates in a document, use Excel to calculate the dates and then run a mail merge.

If your source data is in Excel and has duplicates, run Power Query to remove those duplicates before running a Word mail merge.