I am searching for exactly something like this:
I want an easy klickable solution that allows to control which people have internet access. However, the above solution seems outdated because it uses lua and the last commit is very old. Further, it seems that there are bugs that are not fixed: https://github.com/k-szuster/luci-access-control/issues/34
Besides that, the app seems very popular. I think the usecase is common and so I wonder if luci has also some upstream solution for it that is still maintained?