The Swedish Koha User Group uses the Mattermost platform for communication, in-between physical meetings arranged by the member libraries. The address is https://matters.lub.lu.se/koha.
The platform is open for members only and has restricted access, contact any member of the steering committee for more information if you wish to join.
The Swedish Koha User Gorup also has a wiki, with more information and documentation, at the address: http://koha.se/wiki.
Presentation slides can be downloaded from this page: Monthly digital meetings (contact any member of the steering committee for access).
The User Group has a collaborative Feature Requests service: https://swedishkohausergroup.canny.io/feature-requests