I have a repeating section. It contains a people picker. The field is auto-populated with current user and cannot be edited.
1. I used the people picker control and set the default value to 'Current User'. It worked fine except I couldn't make it read only.
--I tried to 1) set the mode to 'display' and 2) set the appearence to 'disabled'. None of them can save the data to the sharepoint list.
2. I then removed the people picker and used the calculated field control. It only populated the first item. When I repeatedly add more items, they all empty.