Open Excel Workbooks In New Windows With Holding Shift Key And Clicking In Taskbar
For the usage of lowest versions of Excel, with holding the Shift key and clicking the Excel icon in the Taskbar, you can open Excel workbooks in multiple windows.
1. Firstly you need to open a workbook in advance, and then hold the Shift key on the keyboard.
2. Click the Excel icon in the Taskbar
3. Click File (Office button) > Open from your new created workbook just now, In the Open dialog box, find and select the workbook and then click the Open button.
Hope this helps you.