Full permissions (access) for every new file that will be created by another user in the future

Finally we did it. I found an answer on AskDifferent. Syntax was a little bit wrong: no necessarily to use "" in the path address in my case (MacOS Ventura 13.2). I did it with the next command:

chmod +a "group:groupname allow list,add_file,search,add_subdirectory,delete_child,readattr,writeattr,readextattr,writeextattr,readsecurity,file_inherit,directory_inherit" ../Shared/User

Before that I used man chmod :-D

Thank you, Barney!

Hi, Barney, and thank you for your reply.

I thought the way with the same group for both users: for "sharing account" and for "superadmin".

What do you think about security risks in that way? Because in the case of hacking the "sharing account" from Wi-Fi scanner it will be possible to use the same rights that belongs for "superadmin"-mine main account in the same group? Is it not the same risk way that just grant superadmin's authentication data to the scanner directly?

I will be happy if you could explain it for me and another users here, because I am not very experienced in the usergroup's risks and roles.

P.S.: and I guess it is mistake here: "reads ecurity". TIA.

I tried to use -r flag instead -R (capitalisation), but now I got another error:

chmod: +a: No such file or directory

I tried the address with or without / in the end and also located it in the Bash by "ls" command. The directory exists, but maybe I use wrong start point.

Dear Barney, before MacOS i used Ubuntu, so I know details about Bash and quotes, but thank you about notification. It is nice to hear real help from you.

user@imac ~ % chmod -r +a "group:<group> allow list,add_file,search,add_subdirectory,delete_child,readattr,writeattr,readextattr,writeextattr,readsecurity,file_inherit,directory_inherit" "/Users/Shared/User"
chmod: +a: No such file or directory
chmod: group:<group> allow list,add_file,search,add_subdirectory,delete_child,readattr,writeattr,readextattr,writeextattr,readsecurity,file_inherit,directory_inherit: No such file or directory
user@imac ~ % ls -l /Users/Shared/User 
total 1736
<files and directories list>

So, directory exists, but chmod doesn't see it in this case.

Ok, I'll try.

But it gets the error message:

chmod: Unable to translate '<groupname>' to a UUID

What you think about it?

It is obvious, but I already did it. It doesn't work :-D any other thoughts?