I need to add a dropdown "Type"

For example:![enter image description here][1]


then

![enter image description here][2]


Question:
How can i add dropdown "TYPE" in QUEUE informartion like the image above and how can save it when i click "Save Newsletter"?


![enter image description here][3]


  [1]: https://i.sstatic.net/9ss7z.jpg
  [2]: https://i.sstatic.net/GclfE.jpg
  [3]: https://i.sstatic.net/maDXE.jpg


Question:
How can i send the newsletter to the specific subscriber that has a "Type" like "Customer" if the newsletter template name is "Customer"?