The expectations of a team and its members are constantly changing. The work of the team results in new insights about how work should be done, which in turn leads to new expectations, be it implicit or explicit ones.
Meanwhile, changing circumstances can result in existing expectations growing outdated or needing an update.
As a team leader, you need to make sure that not only new but also existing team members are constantly being fed and automating the most recent expectations of the team and their respective roles.
The Maintaining familiarity with expectations feature is a great way to ensure that you stay on top of practicing this responsibility.