Hi @hkuehn,
this behaviour can be controlled from WebApps config.php:
// Set true to hide shared contact folders in address-book folder list,
// false will show shared contact folders in address-book folder list.
define("DISABLE_SHARED_CONTACT_FOLDERS", true);
you can set this via the following command:
ucr set kopano/webapp/config/DISABLE_SHARED_CONTACT_FOLDERS=false
if you get an error that the php endtag is missing and changes would not be applied, then you first need to copy the config.php.dpkg-dist over to config.php. All customisations can afterwards be reapplied with the following command: while read ucrv; do ucr set "$ucrv"="$(ucr get $ucrv)"; done < <(ucr search --brief kopano/webapp | awk -F : '{print $1}')