Sorry, I thought it would be obvious that there was another adult looking after the kids. It's not really possible to work from home and look after kids at the same time obviously. I guess we'll have to agree to disagree on whether they understand/can follow simple instructions. It's never been a problem with my kids.
That is reassuring then. Not convinced their ability to follow simple instructions should even be a factor, though. Kids at that age lack the judgement to know when some rules should be broken.