If you frequently create a certain type of document, such as a monthly report, a sales forecast, or a presentation with a company logo, save it as a template so you can use that as your starting point instead of recreating the file from scratch each time you need it. Start with a document that you already created, a document you downloaded, or a new Microsoft template you customized.
In Microsoft Excel, you can use a picture as a sheet background for display purposes only. A sheet background is not printed, and it is not retained in an individual worksheet or in an item that you save as a Web page.
Because a sheet background is not printed, it cannot be used as a watermark. However, you can mimic a watermark that will be printed by inserting a graphic in a header or footer.