Selective release can be accomplished through a number of mechanisms with our version of Moodle. Three ways that I have done this is through:
1. Time Constraints – Assessment is set to be released on a specified date (September 29 at 8:00am).
2. Group Constraints – Through group settings, things like Forums can be selectively released to only members of a group.
3. Specific Grouping Constraints – In the “Grouping” feature of “Groups,” you can setup specific groups to be in specific groupings. Certain activities can be selectively release to groups of a specified grouping.
4. Lessons – Moodle’s “Lessons” have the feature to release them at a specific date. There are also options to release them based on prior performance on a previous lesson. This is likely the easiest option.