Trying to configure Remote Desktop Connection Broker

I have a working website: mysite.com without Remote Desktop in ws 2012 r2.

I have bought and configured a certificate.

I am trying to configure Remote Desktop Connection Broker: RDCB.

Database Connection String:
DRIVER=SQL Server Native Client 11.0;SERVER=WIN-1;Trusted_Connection=Yes;APP=Remote Desktop Services Connection  Broker;Database=Testdb

Folder to store database files:
C:\inetpub\wwwroot\App_Data

DNS round robin name (ClientAccessName):
RDSCB01.mysite.com
Confident the first two are correct.
I have made a Host(A) in DNS called RDCB01 under mysite.com and static IP.
I am not sure where to go from here.