locked icon, this preference setting is unavailable and cannot be changed for your course or product. Preference settings that appear with an 
unlocked icon are available and can be changed.Course Tools allows you to define which toolbar tools are available for instructors and students -- and the order in which they appear. Course Tools preferences are useful for limiting or expanding the tools that are available in your course. For example, if you do not want students or instructors to use the Communicate tool (Mail, Announcements, and Chat) internal to myitlab, you can turn the Communicate tool off by removing it from the toolbar.
The options available in Course Tools are listed below. Note: If a preference setting appears grayed out with a locked icon, this preference setting is unavailable and cannot be changed for your course or product. Preference settings that appear with an unlocked icon are available and can be changed.
In this section, you can define the available navigation and sub-navigation tools for instructors in the course. You can enable each of the following tools, set the default viewable page when the course is first opened and set order of appearance of the tools on the navigation toolbar. Available navigation tools include:
Note: If your Program Administrator has locked these options, you may not be able to make changes to these tools.
Available navigation tools include:
Today’s View
MyTest
Course Content
Add Content from Library
Map Learning Objectives
Organize Content
Assign Content
Media Library
Manage Question Library
Map Learning Objectives to Questions
Gradebook
Grades
Custom View
Manage Roster
Reports
Communicate
Announcement
Chat
Preferences
Search
Note: MyTest, Map Learning Objectives, Map Learning Objectives to Questions, and Media Library options are not used in myitlab courses and this tab should always be hidden.
In this section, you can define the available navigation and sub-navigation tools for students in the course. You can enable each of the following tools, set the default viewable page when the course is first opened and set order of appearance of the tools on the navigation toolbar. Available navigation tools include:
Today’s View
Course Content
View All Content
Course Calendar
Learning Objectives
Media Library
Grades
Grades
Custom View
Communicate
Chat
Note: Learning Objectives and Media Library options are not used in myitlab courses and this tab should always be hidden.
Use the following settings to define the navigation and sub-navigation tools:
Enable: Select the corresponding check boxes of the navigation and sub-navigation tools. The selected tools will be displayed on the Toolbar for the course.
Default View: Click the appropriate option button to set the default myitlab tool. The default tool is displayed on the Toolbar upon login. By default, Today's View is set as the default. The default view you select here will be inherited by all course sections that are copied from a master course.
Toolbar Order: The Order number refers to the position of the tool in the myitlab Toolbar. The tool set to 1 will appear first in the toolbar, the tool set to 2 will appear second in the toolbar, and so on. Set the order for each of the Toolbar tools by selecting the appropriate number from the list. Note: You can also set the Order of sub-navigation tools; for example, for Instructor Tools, you can set the order for the Course Content, Gradebook and Communicate sub-navigation tools.
After you have made your selections, click the 
button at the top of bottom of the page to save your preferences.
Not sure what a preference setting means? You can view contextual help for each Preference setting by pointing to or clicking the corresponding 
icon.