Hi! Need one more advice. It will be easier to explain with image >
https://drive.google.com/file/d/0BxyYG9AZ78ZpOTJYMGJ2NUxhNU0/view?usp=sharing [drive.google.com]
I'd created legs and this round surface (on which plate sits) as different objects, but later understood that I won't be able to move the table as a single object. Don't know how to place them into one geometry. Round surface had transformations in uniform scale and scale and transform. I selected from pre-transform list Clean Transform and all parameters became 0 and 1, I mean the same as if it is created with this shape and those are default parameters. But if to copy all nodes inside one geometry node and paste them into another it doesn't work correctly.
https://drive.google.com/file/d/0BxyYG9AZ78ZpQUVIa0VzYXBudFU/view?usp=sharing [drive.google.com]
And maybe there is a way to copy and rotate legs using less nodes (instead of creating 6 legs as different nodes and 6 transform nodes for 60 degree rotation)?
Thanks for any help and advice

select both(or more) objects and use Combine tool form Modify Shelf
(or hit Tab in the viewport and type Combine)

and for legs you can use Copy SOP, plug in single leg, set Number of copies to 6 and into Copy SOP's RotateY parm put: 360/$NCY

Thank you tamte so much! Both copy and combine work very well And thank you for this 360/$NCY I never know how to make things like this