[Gaurav_Rawat]

Just do this.
You must got a label already eh ?
Just change its coordinate
or let me do it

Код:

new Text3D:label[MAX_PLAYERS];

^on top
Now cmd

Код:

CMD:aduty(playerid,params[])
{
new Text3D:label = Create3DTextLabel("Admin ONDUTY!", 0x008080FF, 30.0, 40.0, 50.0, 40.0, 0);
Attach3DTextLabelToPlayer(label, playerid, 0.0, 0.0, 0.7);
for(new i = 0; i < MAX_PLAYERS; i++) 
ShowPlayerNameTagForPlayer(playerid, i, false);
return 1;

}

Don't use the aduty i used..
Just the code in it ok !
Rep if i helped.!