Hi Lauren. I am an Excel user like you.
There are two things that you are trying to do. The first is to have No or Not Needed appear in the cell and the second is to have an available dropdown for the analyst to change it. These two will have to be done in separate operations.
It may be possible to set this up with sheet code, but I will address it on a formula level. I used Row 2 since that is the first row of you sample data. In Row 2 of your column Analyst Confirmation, enter this formula and drag down:
=IF(A2>100000,"No","Not Needed")
Modify this according to your actual data. In your sample the Amount is actually in Column B it appears. This will fill in the initial information based on the Amount in the chart.
For the Data Validation, enter the three options in the Data Validation window as below.
The Analyst will be able to override the formula and enter Yes when they have entered their comment. The drawback, that sheet code might be able to correct, is that when the Analyst enters Yes in the cell the formula will be overwritten and deleted. You currently have the macro to reset the sheet to No, so you should be able to revise that macro to put the formulas back in place to reset the form.
Reply if you have additional questions or information. Please mark this reply as answered if this solves your question.
Rich~M