Kanboard: https://kanboard.org/
This thing has a ton of features and is worth checking out. There's a zillion options and settings for it too. I use it internally but I'm not sure if it can do the single calendar thing you're asking.
Kanboard: https://kanboard.org/
This thing has a ton of features and is worth checking out. There's a zillion options and settings for it too. I use it internally but I'm not sure if it can do the single calendar thing you're asking.