Add Roles and Features to the Core Server and select File Server Resource Manager
On Core Server run netsh advfirewall firewall set rule group="Remote File Server Resource Manager Management" new enable=yes
Under File and Storage Services select Shares
Create New Share...
click this through menu and select and Core Server
if needed change the Share tab to have the group you want to see it
Commands
sconfig - On the Core Server this lets you configure the system
netsh - stands for network shell
netsh advfirewall firewall set rule group="Remote File Server Resource Manager Management" new enable=yes - This allows AD File Resource Manager through the firewall