Thank you very much for help (really appreciate it), and I wanna say that for few questions I found answers later by myself (maybe it can be interesting for somebody, so below my comments about it):
1) "How to fully remove shadows from people" - I don't think that this is really important question. I found that we have many possibilities to change scene time in render. In day time or late evening we don't have shadows or really very small. Strong shadows I see only in sunrise or sunset, but remove shadows from there... after few tries I found that I not really need this. In the outside shadows looks normal in sunrise/sunset and in the inside building sunset can't be inside rooms with roofs, only from windows, so we don't really need remove shadows from there.
2) "Few objects are't visible in Octane. On the render low Caroline has stockings in Daz, but rendering in Octane ignoring them.
Sometimes helps scene rebuild, but not in this time" - that was my mistake. I delete stocking and forgot about it
because stockings were been for genesis 8, and Caroline genesis 3. I remove 8 and wanted th change them to another andf forgot about it So rebuild scene works normal3) "How to save all my render settings in Octane after I tune it inside Daz file?" - I found later that Octane saving settings, maybe not really good, but It works generally
4) "And how to make to all objects inside the scene be in the focus?" - simplest way it's change camera parameter "aperture diameter" from basic 16,25 to 1. It's really helps all time.
