Did you assign a Quick-Key to the system you created? If not, you won't be able to toggle that system on and off for scanning from the keys. You can of course go back into the menu system and turn that system on for scanning manually, but that's pretty inconvenient, so most use Quick-Keys so you'll want to assign one.
Watch out for toggling all your groups off, or if using software, forgetting to allow it to enable them.
At first, I found the pre-loaded systems confusing and conflicting with my own programming, so I did a total reset to get to a clean slate to start with. This is an option you may want to look into as well.