You can add a new element to a library, if you drag the object from the panel to the library title by keeping the mouse button pressed. If several objects are marked and added to the library, they will be inserted as a group. A new element will appear in the tree structure with its object name. You can change the name by clicking on it and by entering a new one.

For a clearer structure, you can create folders and subfolders in the library. You will find the New folder command in the context menu. With the Remove command, you can delete the folder again.

If an element of the library is marked, it can be deleted via the context menu. If you select Properties, the element will be displayed in a preview window.

Here you can change the name, if required. The names of the elements and folders can also be changed if you click on their names in the tree structure.