[Samba] Setting up a Share Using Windows ACLs

[Henry]

Following: 

https://wiki.samba.org/index.php/Setting_up_a_Share_Using_Windows_ACLs 

In windows: 

I can set permissions under the "Share Permissions" tab. 

I am unable to make ANY changes under the "Security". When I try I am
presented with: 

"Remotely setting permissions on the folder at the root of a share
removes all inherited permissions from the root folder and all
subfolders.  To set permissions without removing the inherited
permissions, click No and either change the permissions on a child
folder or make the change while logged in locally" 

Under "Share Permissions" I have: 

Domain Admins = Full Control 

Domain Users = Read & Change 

As it stands I am unable to access the share (using a Domain Admins
account) however I am unable to do anything.