Create a new folder - support.microsoft.com
https://support.microsoft.com/en-us/office/create-a-new-folder-cbbfb6f5-59dd-4e5d-95f6-a12577952e17
Type File Explorer in the search box, and then tap or click File Explorer. Navigate to where you want to create the new folder, and click New Folder. Type the name of your folder, and press Enter. To save a document to the new folder, open the document, and click File > Save As, and then browse to the new folder, and click Save. See Also
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