How to Access a Second Itunes Library Windows?

Use Multiple ITunes Libraries on PC

Hold down the Shift key while you open iTunes go to Start, then choose iTunes > iTunes. In the window that appears, do one of the following: Create a new library : Click Create Library. Choose a different library: Click Choose Library.

How do I Open Another ITunes Library?

Press and hold the Option key on Mac or the Shift key on Windows, then open iTunes.
In the Choose iTunes Library window, select Choose Library.
Another window appears, defaulting to your Music/My Music folder.
iTunes opens using the library you chose.

How do I Open Two ITunes Windows?

Its really simple. To open a second iTunes window, just Command+ Double click on any of the sources in the list on the left.