Responsibilities
Enter subject data (e.g., key in data on electronic forms) as the secondary person for double data entry. Note that this role is ONLY applicable for Projects with the "Double Data Entry" feature selected.
Typical User
Study Coordinator and / or data entry staff.
Where Assigned
Assigned on a Project-by-Project basis by clicking on the "Subject Management (Secondary)" role for a user in the 'Projects' area.
Map 
Tutorial
http://www-2.sciencetrax.com/Home//swf/LaunchFlash.aspx?title=Data+Set+Management&flashFile=DataSets.swf 
Click To Play Video