How to use Activity Locks in Moodle
Step 1: Editing Mode
While in the course, there should be a button to the top right, “Turn editing on”. Hit that so we are in edit mode.

Step 2: The Padlock Icon
With editing mode, next to each resource/activity you will see a list of icons, there is a new icon that looks like a padlock. Click on the padlock icon for the resource/activity you want to lock.
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Step 3: Selecting Activity Lock Options
You will see a list of resources/activities in the left column, and a list of check boxes on the right. The checkboxes you choose will be what is required for the resource/activity you wanted to lock.
There are some more options near the bottom, time delay, visible when locked, and show prerequisites.
When you have selected all activity locks desired, at the very bottom of the page click the “Save Activity Locks” button.

Note: New Unlock Icon
Now you will see two icons for the resource/activity with locks. There is a padlock icon that is open, this will remove all locks on that resource/activity.
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Note: Prerequisites
When a student tried to access an resource/activity with locks, there will be a list of prerequisites shown for what they have not yet done.
