Hey @Rory275619, welcome to the forums!
I have a bit of a look and it does seem like there is a bit of a gap in information floating around for getting older face recognition projects working on the Pi 5.
I did find this incredibly detailed video which is Pi 5 specific. Hopefully, you can get some use out of this.
The first 30 minutes or so is theory and the actual Pi tutorial picks up after that point.
Unfortunately, enough of the deeper layers of software changed between the Pi 4 and 5 for our Pi 4 tutorials to be directly compatible but hopefully, you can make some progress with this.
Good luck with your project!
