You can optionally set release dates when configuring your program. On the "Add Program" page, you will find a section at the bottom for setting a release date for each lesson.
If you prefer to set release dates at a later time, select the option "I will set release dates in the future." You can also update the release dates for any unreleased lessons later.
Please note that once lessons are released, they cannot be reverted to an unreleased status, and lessons must be released in sequential order, as Perspectives is designed to be taken in sequence.