As part of our work on combining tags and colors, we have been cleaning up parts of the Kerika user interface that had minor inconsistencies.
One such inconsistency — in our view — was that you were able to add people to a project team from within the card details dialog itself:

This button has been there in Kerika for a very long time, but it doesn’t really make sense to have this capability within the card details dialog: it just isn’t the best place to decide to add someone to a project team.
Instead, in our new layout the Project Settings dialog consolidates all the board management in one place, including adding people to a team, changing someone’s role within a team, and removing someone from a team: