samsung smart tv and xfinity

I swapped out my old xfinity box for a new one due to sound issues. In the old samsung box when I pressed the menu on the samsung remote one of my options was an xfinity icon, then netflix, etc. Now with the new xfinity box I have to hit the menu button and scroll over to the source tab and then select a comcast button with the word xfinity in the middle of it. this is a pain to step through this process everytime I want to switch between a preium channel and xfinity. Long ago I had a concast business account but now only xfinity. How can I get back?