As sad above, slide your vacation so that it will touch one day of your Trip. Make sure that you have at least 48hrs between 1st day of VAC and last day of training or you won't get the training slots you bid. (48Hr buffer)

You are still eligible to make up some of these vacation hours during the View/Add as a makeup bid, if you wish to do so. (prior to Open Time Release) Or you can just use additional VAC hours to cover the difference.