This image shows the Access tab of the Data Set dialog. Here you can edit the access permissions that users and roles have to a data source. The left side of the tab displays a list of all the users or roles that have access to the data source. You can toggle between what list is displayed by clicking All, Users, or Roles tab. You can also use the Add field to the right of the tabs to search for and add users and roles.
The table lists the access level of each user or role you selected. Click in the permissions columns to change the access level of a particular user or role. Options include Full Control, Read-Write,and Read-Only. You can also click the X in the right column to delete access permissions for a user or role.