For your 2nd question, you can write the code like this :

Code:

---

panel icon1
{
  pos_x = 5;
  pos_y = 10;
  bmap = enemyBmap;
  on_click = sum_enenmy;
}

---

I don't understand what you mean "copy panel", maybe you can write
your code like this :

PANEL* icon2;

panel icon1
{
//... define elements of icon1
}

icon2 = icon1;

EDIT
----
I've modified some codes.