Today I was working with Visual Studio Online for a customer and came across an interesting issue. They are using a multiple team strategy so I have created several Areas and security groups with the default contributor permissions. Everything worked fined until our testers went in to Test Manager or the Test on VSO Web Access. They could not see any existing test plans.
After consulting with the test team I found out that you need to have specific permissions set at the Area Path level and Project level.
Area Path Level //
View Permission for this Node
Project Level //
View test Runs
View Project level Information (Required to Connect to Project)
Once we made the changes everything worked like a charm