• Executive users are able to see all deals, people and companies in the entire account. They also can set company ownership and view private activity notes. 
• Team Leaders are able to see their own deals and any deals that are owned by users on their team. 
• Team Members can only see their own deals, regardless if they are on a team. 

To control People and Company visibility for Managers and Basic users please visit Users in Account Settings then click on the team name.