Starting from next boot, you may buy a party scheduler for your societies.
The party scheduler provides an in-game command to arrange parties with
specific compositions. Once you've bought the scheduler support, it
becomes available to all members of your society with the command
'society+ party'.

Keep in mind that this is the initial release, I have more functionality
in mind that will follow later on, but naturally I'm open to all kinds of
feedback on how to make it work better for your societies. For instance,
if you'd like to integrate it to your ss website throw me a tell and we'll
discuss the different options.

++ Duz