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When object is selected, a number of options become available. 
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Editing and adding new objects
The first plus sign icon allows you to create new objects.
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Please note, that in this view you will only be able to add objects that match currently selected perspective.
To change the perspective, use a pull out menu activated by the Perspective button:
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A Perspective menu is now shown:
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When a New object function is used, a list of object types available for this perspective is shown.
Select a desired class from the menu and hit Next:
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A new object form will be shown. 
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Fill In the required fields and select Add New:
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Edit Object
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Delete Object
Tree View
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