Share folder permission and security

Greeting everyone!

I am hoping someone in this forum may be able to assist with my file sharing setup...
How can I get this accompish:

FolderA - I have everyone with read only and admins as full control in "Share Permission" under the share tab. This works for me as I do not require users to create folders below this folder.
I have sub folders called:
-SubFolderA - I would like for all users to be able to create files and folders in SubFolderA
-Users - User can only access thier personal folder within this subfolder.

I have all the above setup as follows:
FolderA - Share permissions ; Admins F\C & everyone R
SubFolderA - on the security tab, I have removed all groups and given F/C to admins and Modify to SubFolderA group
Users - Admins F/C and users F/C of their own user folder.

Issue here is that, users aren't able to create files and folder with this setup unless if I set FolderA share permission to modify for everyone. How can I accomplish this given the above details.

Any suggestions is greatly appreciated.

Thanks in advance,
Hamid

Set the following permissions:

FolderA:
Share permissions - Administrators (full), Domain Users (or you can create a group with only speciffic users) (modify, or full)
NTFS permissions - Administrators (full), Domain Users (or the group you set abouve) (RE, L, R)
SubFolderA:
Remove the inheritance option
Set NTFS permissions as you like for speciffic users. I recommend you work with groups, and put users in those groups.