The BuddyPress User Circles plugin allows users on BuddyPress based social network to create lists of users, e.g. Close Friends, Family, Colleagues, etc.
The integration works and requires the BuddyBoss Platform installed and activated on your website.
BuddyBoss Platform is a fork and forge of the BuddyPress plugin and bbPress plugin. Any plugin developed for the BuddyPress and bbPress plugin is supported by the BuddyBoss Platform.
You do NOT need to install the BuddyPress plugin or the bbPress plugin separately. BuddyBoss Platform acts as a replacement for both the plugins.