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-Dos checkbox in Options.
For details on the "Scheduler" screen, refer to how to view the Scheduler screen.