Sure, I can help you with that! You can use the

Code:

CHAR

and

Code:

CODE

functions in Excel to increase the alpha character to the next letter. Here's how:

1. In the cell where you want to display the next letter, enter the following formula:
   Code:

   =CHAR(CODE(A2)+1)

2. In this formula,
   Code:

   A2

   is the cell that contains the current letter. The
   Code:

   CODE

   function returns the ASCII code for the letter in cell A2, and the
   Code:

   +1

   increases the code by one.
3. The
   Code:

   CHAR

   function then converts the new ASCII code back into a letter.
4. Copy the formula down the column to apply it to all the cells.

That's it! Now, each cell in the column will display the next letter in the alphabet. Let me know if you have any questions or if there's anything else I can help you with.