Sure, rounding numeric values in Excel is a common task. Here's how you can do it:

1. Select the cell or range of cells that you want to round.
2. Click on the "Home" tab in the ribbon at the top of the Excel window.
3. Look for the "Number" group and click on the "Decrease Decimal" or "Increase Decimal" button until you have the desired number of decimal places.
4. If you want to round to the nearest whole number, you can use the
   Code:

   "=ROUND(A1,0)"

   function.
5. If you want to round up to the nearest half number, you can use the
   Code:

   "=ROUNDUP(A1*2,0)/2"

   function.
6. If you want to round down to the nearest half number, you can use the
   Code:

   "=ROUNDDOWN(A1*2,0)/2"

   function.

I hope that helps! Let me know if you have any other questions.