I need to select some values in a Listbox????
 

I have a VBA form (Excel), in this form I have 2 listboxs, in the first Listbox I have 10 fields, then the User moves to the second listbox the fields that he want to create a report.
The problem is that the users will choose some elements of the second listbox to calculate subtotals. Ideally each element in the second listbox would have a combobox, then the user could choose this elements€¦ But I don´t know about If it is possible.
How can I do it????