Devstack installation
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Set a Subsection to be Timed
Go to Studio and add a new course subsection
Select the Configure icon for the subsection.
In the Grading section of opened popup, set the assignment type and due date for the subsection.
Select the Advanced tab.
In the Set as a Special Exam section, select Timed.
In the Time Allotted field, adjust the length of time that you want learners to have to complete the problems in the subsection.
Select Save.
Publish course