So please stop with self employed flexibility bullshit.
I own my own business after years as a sole traders.
I know exactly how flexible I can be in comparison with someone who has pretty much ZERO flexibility when it comes to the hours you must be at work..
The answer is - a lot.
We are talking about someone who wants to go to an AUCTION.
Where he might buy things at an as yet unknown price that he might sell on at an as yet unknown profit.
This is not anecessary important client meeting, or a scheduled presentation or day giving training. It's not a job he will get paid for only if he shows up.
It's the very definition of the type of day you pretty much have to be flexible on if you are self employed and have children.
There will be times when it will be very tricky having a wife in such an inflexible job while he tries to launch his business.
But an auction is not one of them.
It is very worrying that he is stopping about missing an auction when his (so-called) partner has a placement day she basically can't miss.