Favorites
The Favorites are only visible in the toolbox page after a project is opened.
Add to Favorites
Function description: Add the specified tool to Favorites for easier and quicker access later.
Steps
Right-click on a tool with an icon 
in the toolbox window, and select "Add to Favorites" from the context menu to add the tool to Favorites.
Remove from Favorites
Function description: Remove the specified tool from Favorites.
Steps
Right-click on a tool with an icon in the Favorites section of the toolbox window, and select "Remove" from the context menu to remove the tool from Favorites.