Hi Greg,
You don’t actually have to put "SELECT Jan, Feb" you can just type in a field name in the box for example you can just type in RecordID and it will print the RecordID in the column. If you take a look at some of the grids on our Mobile screens you can see this in action. One thing to note is if you are adding numbers together instead of concatenating strings you may have to include checks for null values and do some casting. If the grid doesn't show up it means that there is something wrong with the script you entered.
If you get stuck on this or need further help you can schedule some paid consulting time with me and we can go over this together.
-Michael