Quick, clean, and to the point

Drag to duplicate worksheet

Windows shortcut 
Mac shortcut 

Normally, when you click and drag worksheet tabs at the bottom of a workbook, you are reordering the tabs. Use this shortcut when you want to duplicate a worksheet. The cursor will change to a small plus (+) sign inside a document. When you release your mouse, a copy of the worksheet will be inserted at the location of the cursor.

Such a great resource! Really appreciate your help - Carole
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