Ah it depends when this afternoon off was mentioned though, If the afternoon off was mentioned prior to the appointment that is in effect saying your having half a days holiday. They wont pay you an afternoon off just for an appointment if you get me, So you might have to take it as a holiday. If you were to go back to work after the appointment you might of only been an hour or hour n half which the company would of had to pay but they won't pay for the full afternoon if you get me. So yes you might have to take it as a holiday .