Step 1. Go to tests
Click the menu icon on the top left of your screen and click Tests in the main menu.
Step 2. Open a group
Select the group where you stored the test in the index.
Step 3. Choose Lock
Find the test, click the 3-dot icon , and choose Lock.
A lock icon appears besides the test and it can't be edited. To unlock the test, click the lock icon and click OK to confirm.