Organize objects in some geometric figure

I have number of obstacles on the level.

Is there any way to organize them in some geometric figure (if i look on them from above) like circle or square?

By ‘organise’ do you mean distribute evenly/scatter on the perimeter/surface?

Yes.

For example trees, stones, etc.

You did not really answer my question but here is an example of even(ish) point distribution in a disc:

Thank you, will try this