I want to know why we can't select apprentices without having to retain them it doesn't seem very realistic especially if your horse is carrying top weight in a rating handicap a lot of trainers give apprentices the opportunity to ride them because they can claim a couple of kilos or pounds. Unless there is a way to do it without having to retain them in which I haven't discovered.

most trainers retain apprentices in real life but they are available to use by other trainers
agree there are no apprentices available unless you retain one there should be some available