To import subject data, you need the 'Import subject data' permission. This feature has a database-wide scope.
Existing subject data can only be overwritten if the study status is set to 'In Preparation'. Help on study statuses...
"Read only" data cannot be imported. More help on this from the DE/DR help...
Subject data can be imported into MACRO from the following types of file:
Importing subject data in MACRO format (prd)
Importing subject data in CDISC format (xml)
If you are using remote data entry, please note that data transferred from a remote site cannot be imported into MACRO using these subject data import options. It must be instead imported using the Auto Import module.