[natarius4k]

No, manager can't prevent you from switching to any other team or even start a team on your own. The idea behind this is that it ensures that talent naturally gravitates towards teams with most impact. Managers have no say!

Reviews are written by your peers (that usually includes your manager).

Reviews need to quote actual success metrics to prove the impact you had...just writting "bob is dope" won't take you far :)

[amaks]

What about situations when your performance review score is low? Sure, manager may not prevent you from moving the team, but company policy may do.