Like anything new, even a child tying shoes, a new scanner is difficult to program at first. So you are going through something many have experienced.
You can have many, many different Favorites Lists. I have upwards of 25 depending on different listening scenarios.
This expands and explains what was written above-
Your Profile is the collection of Favorites Lists. In Sentinel, use the Master Database to locate the items of interest. Then right click Append to Favorites List. In the Pop-up window that appears, click the New Favorites List at the bottom left corner. Enter the name you wish and click OK
Then, click the Edit column header and Edit that newly created Favorites List. (Highlight the row and click OK.) In the right pane, go to Options and assign a number in the FL Quick Key. That's where you create a Favorite List Quick Key.
To add a second, third, fourth etc. Favorites List, repeat the above steps. Just do not use the same FL Quick Key for more than one Favorites List.
After you have created all your Favorites Lists, go back to the Edit column and click on Edit, this time Edit the Profile. In the Scan Selection tab, be sure that both Monitor is On (so the scanner will "listen" to the FL) and Download is On (so the FL is written to the scanner).
The final step is to write this data to the scanner as you already know how to do, being sure to erase the Favorites Lists existing on the card ("cleaning the slate").
Then to toggle an individual Favorites List QK On/Off, press the number assigned, then E Yes. (The E Yes confirms you want to toggle the FLQK, because sometimes, buttons are inadvertently pressed.)