Change RDP port from 3389 to 3390

HI,

I have configured RDS on windows server 2012 R2. Configured RDP port 3390 as i am already using 3389 for another service.

While accessing via remote desktop it work properly X.X.X.X:3390. but now I am not getting how to configure same for remote APP. as the apps are still sending request on port number 3389.

Thanks in Advance.