Solution:

1) To add the 'Project To Do' tab to the schedule, do the following:

a) Select the 'View' menu and select 'Tab Gallery...'. (The Tab Gallery dialog box appears.)
b) Select 'Project To Do' from the 'Available tabs' list box and click 'Add'. (The tab name appears in the 'Show these tabs' list box.)
c) Click 'OK'.

2) Click 'Project To Do' tab.
3) Place the cursor in the 'Projects' group.
Project group
4) Select the 'View' menu and select 'Group By...'. (The Group by dialog box appears.)
5) Click on the down arrow in the 'Group projects by' group. (A list of fields appears.)
6) Select a field by which to group projects.
Group Projects
7) Select the 'Ascending' or 'Descending' radio button.
8) Repeat steps 5), 6) and 7) to specify more fields.
9) Click 'OK'.