Setting the Access permission on categories allows these categories to be listed when a page is edited to add portlets or widgets.
Hover your cursor over
in the Administration bar, then select
Applications
from the drop-down menu to open the
Manage Applications
page.

Select one category from the list of available categories in the left pane, then click
.
Select the Permission Settings tab.
Set the Access permission on a category that is similar to the Access permission section.