Is it Natural to see that my Parent dir (Shared) ?
Sorry, I didn’t see this, as it was listed at the bottom of all the FAQs. 
Yes. it’s shared with the admin assuming it’s you.
Anyway, to see the permissions on files and directories on your machine, type:
ls -l
Here’s a YT video that explains what the perms (ex: drwx-xr-x) mean:
https://youtu.be/do4zqITWee0
And, if you check on the Apple Support, there is documentation on how to use Terminal:
And, just in case you didn’t want to use Terminal, you can always check file permissions via Finder by right clicking on the file/folder/whatever and select “Get Info”. Scroll down to the Sharing & Permissions section.
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