LockDown Browser restricted assignments are indicated with a padlock icon 
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Installation Requirement
Before scheduling a quiz or test in a computer lab, contact the lab administrator well in advance to ensure that they have time to download and install LockDown Browser on each of the lab computers. You might want to create a test assignment that the lab administrator can use to verify the installation before your students arrive.
When Not To Use LockDown Browser
Do not require LockDown Browser if any of the following circumstances exist:
- If LockDown Browser cannot be installed on the computers your students will use to complete the assignment — for example, in a restricted or Linux/UNIX lab environment.
- If the Windows group policy allows students to access the Task Manager or switch users. This access allows students to open other applications and circumvent LockDown Browser.
Schedule the assignment, if you have not already done so.
On the Edit Restrictions page, select LockDown Browser Required.
Select if students can access an in-browser calculator.
- Do not allow calculator
- Allow basic calculator
- Allow scientific calculator
Select Drop Security and Time Restrictions after and select a date and time after which your students can access the assignment.
Security restrictions (password, IP address, and LockDown Browser) are not automatically lifted from assignments after the due date. Usually, these restrictions mean that your students can't see their scores and feedback for individual assignment questions.
To allow this, either drop the assignment restrictions manually from the Schedule page or select Drop Security and Time Restrictions after and set the date and time to drop the restrictions automatically.
Click Save.