It's interesting how often people find ways round this problem, given time to plan for it, but sometimes it's still insurmountable.  On these occasions, we go for one of three options:-

1. We split the event e.g.  2 x 2 days with a month or two's gap.
2. We train the team in two separate groups and bring them together for an 'issues' day.
3. The team attend our Wentworth 1 course as individuals, two or three at a time and then have 1 - 1½ days as a total team.