I just did an experiment with my daughter. She knew nothing about photography. It took me 3 minutes to explain in simple language how exposure works. I am not talking about inverse square laws and calculating hyperfocal distances. Just basic ISO, aperture and shutter speed. The higher the f number the more you get in focus, to throw background out of focus use a low aperture eg f2.8.
If I were going to spend an hour and half at a 'learn at work' session and I came away without an improvement in my basic knowledge and having been treated like a moron with an attention span of a goldfish, I would not be impressed.
No one's saying you treat people like morons... You just jumped to that conclusion all by yourself. I'm saying that you just teach something relevant. Non-photographers who aren't even active in photography as a hobby will probably have a very simple auto exposure camera or a phone. They'll not be able to put anything in practice if you teach them shutter speeds and apertures and ISO, so it will be an abstract concept to them that means nothing. They'll not be able to DO anything with it, so it will be a dry subject to them that they can't actively participate in. It's also not a great introduction to photography.
If they were genuinely interested, and you supplied them all with a manual camera (or one that could be used manually) it may be a different story entirely, but that's clearly not going to be the case in the OP's scenario.
No one's saying they wouldn't understand... or that you treat them like morons, just that unless they can actually get their hands on camera and DO it, they'll get bored.
I'd get them to take images of each other, and then use the images created to discuss matters of composure, lighting exposure etc. This will get them engaged, and once engaged you can then assess exactly how interested they are, and how far to take the theory.
They won;t be coming along because they have a passion for photography, they'll be going along for a laugh more than likely. Start lecturing them on reciprocity and they'll probably not find it fun.
I've taught photography to children at one end of the spectrum and post graduates at the other, and at neither end of that spectrum would I start off with exposure theory. Beginners want to ease into a course of study at a pace that makes them feel confident. Punch them in the face with reciprocity as soon as they walk through the door and you'll not be running a popular course, trust me... I've been doing this for a considerable amount of time now. You on the other hand have had some one 2 one tuition with your daughter, who is clearly clever, switched on, trusts you and you have empathy and rapport with each other. That is NOT representative of a classroom situation on the first lesson in a room full of people who don't know each other... or you. You're just going to have to trust me on this one, even if you think I'm wrong... because I'm not