karatchov,

yes, everything in liqbase is modular.

every single screen is a plugin, and complete apps can be run either within the overall playground (as I do), or as totally standalone if desired by the developer or end user.

so if you only ever use the calendar it should be feasible for you to just install and run that without having to go through everything else.

It runs in the XV overlay, so different operating systems have different support for displaying multiple instances, some are better than others.