I am looking for something I can install on my local Windows server at home. I want to be able to time-restrict internet access to my kids computers and mobile devices. I know my router has a mac filtering function built in - but multiple not-so tech savvy adults will be using this - so I want something with a technical back end that I can configure once and then a simple GUI other user can use to manage. I do not want to install apps on each device as they have quite a few. Any suggestions?