How do you set a user's default team on all modules and add a way to hide users that are not on the same team as the logged in user

Idea created by Trudy McEwan on Oct 29, 2015
    • Nikhil Jambhawadekar
    • Muhammad Shaji Uddin
    I am trying to find a way to change the default value of the Team Field from Global to another team.  I tried removing the Global team from the user and then creating a Contact or Case, however, it still defaults to Global.  

    In addition is there a way to hide Users not in the same team as the User logged in from user drop down lists.  The goal is to make the two teams completely separate.