There is no direct way to get drop down in listbox in qlikview. But you can either you multibox and by adding several listboxes or add dimensions in pivot table, and enable drop down select in presentations to get dropdown option or else you need to use extensions.
i dont have extensions with me but for the other two ways i created a example and attached here
Check the attached example and let me know if you need any help.
For field, use multiboxes with one field in each box.
For variables, use an input box and set the options on the Constraint tab to "Predefined values in drop-down" and enter the values in the "Prefined Values" area.
Logic will get you from a to b. Imagination will take you everywhere. - A Einstein
