Click the cell? or otherwise select it (as with arrow keys)?

Excel doesn't know that while you are hovering over the cell you want to see
the arrow. However, it does know you're hovering over it - and if you INSERT
a COMMENT, when you hover over it, the comment will display. So you could
insert a comment to clue the user that there's a list there, perhaps
something like:
Click Here To Select From List



"TMBS P.M." wrote:

when I put my mouse over the cell which has the drop down list, the arrow
does not show. How can I get the arrow for the list to show when I put the
mouse on it?