Sheets in a spreadsheet can be renamed. The new name cannot:
•Contain less than 1 and more than 31 characters.
•Contain any of the following characters: (:), (\),(/), (?), (*),([), (]).
•Begin or end with a single quotation mark (').
•Repeat the name of the other sheet.
To rename a sheet, use one of the following methods:
•Right-click on the sheet tab and select Rename in the context menu.
•Open the sheet to be renamed and in the Command menu select Table > Sheet > Rename.