@JetlagJen I tend to find published resources aren't much use because they don't usually fit the specifics of a situation so they create confusion.

I used to draw little stick figure cartoons or sort of flowcharts to try and cover what might happen in a situation and what the backup plan could be if it doesn't go to plan. Or try and do a practice run beforehand - so in this situation, send him in a taxi to a friend's house or something?)