Tasks Mailboxes ("folders") can be created in your Account using the WebUser Interface or a MAPI client application (such as Microsoft Outlook). These Mailboxes appear on the Mailboxes page. Click on a Tasks-type Mailbox name to open the Tasks list.
You can have several Tasks-type Mailboxes in your Account, but only one of those Mailboxes is assigned the role of the Main Tasks Mailbox. When you accept a task assignment request or create a new Task, the task data is stored in the Main Tasks Mailbox.
To create a Tasks-type Mailbox, open the Mailboxes page and select the Tasks value in the Create pop-up menu. Type the name of the Tasks Mailbox you want to create, and click the Create button: