1000 FAQs, 500 tutorials and explanatory videos. Here, there are only solutions!
Automatically adding the SGID bit to directories in my hosting space
A directory with permissions 0755 becomes 2755, 0777 becomes 2777, etc.
This means that newly created directories belong to your site's group and can therefore be modified by your site's FTP administrator(s).
Warning: some software, including some versions of WS_FTP Pro, miscalculate the octal value representing permissions and instead of displaying 2755, they display 745, which is completely wrong.
*Set Group ID which, in octal, has the value 2000; you will find more information on this page
Link to this FAQ: