[Gammix]

Just create a 3DTextLabel on their position.

https://sampwiki.blast.hk/wiki/Create3DTextLabel

pawn Код:

new Float:pos[3];
GetActorPos(actorid, pos[0], pos[1], pos[2]);
Create3DTextLabel("Text", -1, pos[0], pos[1], pos[2], 50.0, 0, 0);

Creates the label on its position.