A team member on a self-directed team is concerned that a feature the customer wants...

In Agile, transparency and communication within the team are key. The team member should log the concern into the risk register to formally track the issue and share it with the team at the next standup. This allows the entire team to discuss and assess the situation collaboratively, ensuring that the concern is addressed and managed collectively. This approach aligns with the self-organizing nature of Agile teams, where team members are responsible for working together to find solutions.