If it has to be strictly rotating, then the option that SRiegel mentions really isn't onerous.
If, on the other hand, a truly random order can be used, once the Excel spreadsheet is set up properly, you can add a column and fill it with the randomize function ( rand() ), highlight all the column heads, click on filter, highlight the rand() column and name columns, then press the A-Z sort button. Each press truly randomizes the chosen columns (in your case, the names).