[MythicalMarauder]

About your second question, you need to edit the OnPlayerText
An example:

pawn Код:

new string[128];
new name[MAX_PLAYER_NAME];
GetPlayerName(playerid, name, sizeof(name);
if(pInfo[playerid][pAdmin] == 5) // max level? | change to your enums, sadly I cannot guess them.
{
     format(string, sizeof(string), "[OWNER]: %s(%d): %s", name, playerid, text[0]); 
     SendClientMessageToAll(white, string);
     return 0; // stops the original text from being sent.
}