Windows 2012 RDS farm licensing

Hi,

We have built a Windows 2012 RDS "farm" and have also purchased 100 RDS CALs from MPSA.

Would someone instruction what do I need to do to make the 120 days warning goes away?  How do I apply the license to each RDS host?  Do I need to do anything on my connection broker?  I also have a file server that holds the roaming profile of the user.  I should not need to apply the CALs to it, right?