Hi @Luiz Felipe,
There is no out-of-the-box feature supported by SharePoint to add a shortcut to other libraries in a library. As a workaround, you can add links to folders in other libraries in the current library. So, you will be redirected to other libraries when you click the links to the folders in other libraries. Here are the steps:
- Go to library X >> select a folder in it (Create one if there is no folder in it) >> Copy link.
- Go to library Z >> Click "+New" >> Link >> paste the link you copied and give a name to it >> Create.
- Now when you click the link in Library Z, you will be redirected to the folder in Library X. Just one more click to go to its parent, which is Library X.
Hope my answer helps. Feel free to comment below if you still have any questions.
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