[MadeMan]

pawn Код:

new Text3D:AdminLabel[MAX_PLAYERS];

OnPlayerDisconnect

pawn Код:

if(/* is admin */)
{
    Delete3DTextLabel(AdminLabel[playerid]);
}

LoginPlayer

pawn Код:

if(/* is admin */)
{
    AdminLabel[playerid] = Create3DTextLabel("Admin", 0xFFFFFFFF, 0, 0, 0, 50, 0, 1);
    Attach3DTextLabelToPlayer(AdminLabel[playerid], playerid, 0, 0, 0.4);
}