I’ve setup Hauk for my dad to broadcast his location while delivering. It is only activated when he activates it, but it also works if you want to share location with a specific group of people. It has an app and a website, and can be password protected. It also records history and speed, but history can be turned off.

It is not very robust or particularly well coded, but it is a nice little FOSS app that works, but has to be self hosted.