The list shows mailboxes that match your selection criteria.
Select the mailboxes that you want to enable for client-driven PST migration:
You can use to select every mailbox in the list, or to clear all selections.
To select individual mailboxes, hold down Ctrl and then click the mailbox name.
To select a group of mailboxes, click the first mailbox you want to select. Then hold down Shift while you click the last mailbox in the group.
For more information on setting up client-driven PST migration, see the Administrator's Guide.
When you have selected the mailboxes you want to enable for client-driven PST migration, click to continue.