Add multiple file upload field to Zurmo

I am looking for someone that would be able to add a multiple file upload field to the field section in the designer section. This way I can add it to any of the forms in the designer area. I have attach an image of the section I am speaking about. Programmer must speak & write English 100%. Do not bid on this if you have never worked with Zurmo. Need sample of prior work with Zurmo.