Since a filemaker value list can only display data from two fields, you'll need to define a calculation field that combines these values and then use it as the data source for your value list.
A calculation defined something like:
rate1 & ", " & rate2 & ", " & rate3 & ", " & rate4
would let you put all these values in a single column by referencing this single calculation field.
Just make sure your field is set to return text instead of the default number setting.
Phil, Thanks again for the response. I did some digging and found a solution that appears to work for the moment: I created a calculation field in my table that uses the 'List' function. I then used this variable for my value list field. Is there any reason you could see that might make this solution untenable?
If it lists the values the way you want, use it.
I'd think, though that you'd get a single column of values from it unless you use the subsitute function to replace the carriage returns produced by the list function with another character.
such as: Substitute ( List ( rate1 ; rate2 ; rate3 ; rate4 ; ) ; ¶ ; " " )