Save To Library

What about save to library? I don't even know how to add an object to library and is hard to find information about this.
It would be great if someone shares a tutorial or something

You need to create folders in the tree view first through its context menu.
Currently your tree view is empty.

1 Right click the tree view > New studio folder.
2 Right click the new created studio folder > New project folder.
3 Right click the new created project folder > New group folder.

Now select the new created folder and click the save button to save object into this group folder.

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Also you can use this
File > Open Object Library > Right click a group folder > Save Selected In Scene.

It works!!
Thanks a lot man!