Open another WB toa new window in a WB Open

[sumdumgai]

Hello. I'm opening a couple of other workbooks in an event when my workbook opens but they do not open in their own windows. I get a single window. What's the command to open them in their own windows. I'm using:

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Thanks.

[sumdumgai]

On another computer, multiple windows are opened as expected. However, on one computer, only one icon shows on the task bar while all three workbooks are opened. I have to go into Options/Advanced, unset 'Show all windows in the task bar', hit 'OK', do Options/Advanced again, and reset 'Show all windows in the task bar'. Then all three icons show in te task bar.