There are two ways to start your training from a specific position. In the Repertoire Module you have to go to the desired start position. Then switch to the Training Module. The last position, which was shown in the Repertoire Module is shown now too. In order to start from this position you have to use the option Start from Current Position. If you expect to frequently use this position as training start position then you should create a variation. Once you’ve created a variation you can simply choose it from the opening to train list. The proper training settings will be automatically selected for you.