Should I change the owner to "nobody".

[tomerg]

Hello, I need to make a SMB share for a small office (8 people currently). I set the permissions to "open", as all people there need to have read and write permissions and also there's an .exe file there which all users use simultaneously - so I'm not sure if the read permission is enough for that or I need a higher level for that (or read is enough). Do I need to change to owner to "nobody"? I would be thankful if someone can explain what it means and how is it more secure then the owner being "root". Also what about the group - what should I set it to (currently wheel)? Thanks in advance.