[pawn]else if (strcmp(cmd, "!police", true) == 0)
   {
       SetPlayerSkin(playerid,1);
          }
      return 1
if (strcmp(cmd, "!paramedic", true) == 0)
   {
       SetPlayerSkin(playerid,5);
          }
      return 1;[/pawn]
2. How do I make cops vehicle only enterable by cops?
Sorry but i can't make you all the script, try to do it on your own.
How do I do medic heal-only commands?
The same as the first question... but i can give you a idea. You should disable the !heal for skins witch are not medics.