As a system administrator, you can bookmark up to 10 sub-sections from sections within the Administration menu by clicking on the Star icon that will appear in the right corner of your screen next to the Configuration section. 

Any sub-section that is favorited will appear in the Favorites section in chronological order. A yellow star indicates that the sub-section is favorited, and a clear star indicates that it is not.  Only sub-sections that appear in the navigation bar of the Administration menu can be favored. To un-favorite, a sub-section, click on the star icon again and it will be removed from your favorites list in the Favorite section. When navigating to the Administration menu, the Favorite section appears first by default. You can gather more information about the Favorite section of the Administration menu by reviewing the article, Using the Favorites Tab in Administration.