Perhaps, your husband can send a handout flier, to ALL parents, about late pick ups.
Because, not everyone reads, e-mails.
In it, state: that the children need to be picked up on time. That he has to, within 15 minutes, go to another obligation and appointments.
He cannot... stay on and on, for late parents.
And that his daughter missed an appointment, because he had to wait for late pick up parents.
Isn't there another Coach, besides him????
If so, then there needs to be, a system of who waits for the late pick ups. Not only him, all the time.
It is only fair.
But, if a parent is late, perhaps because they could not get off of work on time... then what?
The parents, have a responsibility, to have their child picked up, on time, as well. And to have a back-up plan, in case, THEY are late for picking up.
That needs to be said, in the newsletter too.
The thing is, people assume that the Coach can just wait and wait... and has time to wait. And they take it for granted. But your Husband, cannot wait. So he needs to say that.
Everyone has a schedule, and he is not a babysitter for late parents.
Don't say that your Husband has a 1/2 hour time-frame in which to get to another "appointment" or obligation. You need to say it is 15 minutes... because human nature is, that people will be later than even 15 minutes. So don't give the absolute last minute timing, of it.
Just be matter of fact in the handout.
And the handout should also state the "rules" of pick ups.
People, do not think... that a Coach has other things in life to do... and to get to right after practice. So you need to spell this out.
IF, he is expected to babysit the kids, for late parents, then maybe they should have a penalty. Like child care Providers do: meaning, they charge $5 per every 15 minutes that a parent is late to pick up their child.
And, he is certainly not a shuttle bus... to take kids home. Either.
There is "liability" for him, if he transports a child home, in his vehicle. For example.
Or, maybe your Husband can just do Coaching, less.
Since it seems to conflict with family dinners and appointments and family life. Or, he just will not be able to schedule anything else... after his Coaching obligation. It seems, he has too much to do. And how can he then, be able to have family dinners and appointments for his kids, after Coaching?
It is a family scheduling, problem as well.
In any handout that he gives to parents, per pick up times... he needs to state... a TIME. Meaning, he has to state that pick ups has to be within say, 15 minutes. After that he will not be there.
AND I would think, there is another Coach there too????
Because right now, parents seem to think that the Coach can just wait forever... for them to pick up their child. They are then, making your Husband responsible.... for watching their kids, for however how long it takes, for them to pick up their child.