How to normalize audio on Master channel (UR44c)?

Hello, I bought a UR44C a couple of days ago. I have a question about dspMixFx.
How can I add a compressor (for volume normalization) to a Master channel or DAW channel? I found that this possibility is only for INPUT channels.
The fact is that when I play games or watch movies, the sound of the game or movie is usually quiet, and I used to have an E-MU 1616 card where I could easily add the “Auto-Levelling” effect to the master channel, which automatically raised the volume of the signal. And how can this be done on the UR44C?