Thank you for reaching out to the Community and welcome.
Spotify doesn't have a direct option to duplicate a playlist, but you can copy all the content into a new one. As you're playing from a Chromebook, you can use the Web Player to do it following this steps:
1. Open the Web Player and click the option + Create Playlist on the left side menu.
2. Once created, select the playlist that you need to copy.
3. Select all the content of the playlist using the keyboard shortcut CTRL + A.
4. Drag all the content to the new playlist located on the left side menu.
Note: you can rename it before or after the process to make it different than the original one.
Hope this helps. If anything else comes up, the Community will be here for you.
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