Shared space you do not have a portlet to display to-do-alone Tasks.
However, the uncompleted shared to-Dos assigned to you can be displayed in the scheduler for scheduling.
To display uncompleted shared to-Dos in the "Scheduler" portlet, on the "Scheduler" screen, select the "Show uncompleted to-do" checkbox in "Options".
For details on the "Scheduler" screen, refer to how to view the Scheduler screen.