Problem to visualize the main tools of SketchUp plugin

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I installed SketchUp 2016, then I downloaded the legacy, and in the end I installed Open Studio. Anyway I have a problem. I can just click and visualize these tools : "Legacy Open Studio", and "Legacy Open Studio Rendering". I have just "New energy plus input file..open energy plus input file ect.." How can I activate the main tools "New open studio model, open openstudio model...new shading surface, new interior partition surface group...ect" ?? Furthermore if I click "Extensions" i can see just "Legacy openstudio"..but in all the video tutorials I see other 2 windows : "Open Studio" and "Open Studio User Scripts". Why can't I see them? Did I make any mistake in the plugin installation process? Help!