The idea here is to release a required item x hours and y minutes after all pre-requisites have been completed. This would be very useful in a self-paced course. Please find a quick mock-up of this feature attached below.
For example: Assume a student must go through several required components in several modules within the Lessons tool. The student must submit a required assignment before proceeding to the required quiz before proceeding to the next required module.
The student submits the required assignment, which then unlocks the quiz. The student then takes and submits the quiz. But before the student is allowed to go on to the next module (i.e. before the next module is unlocked/released), the student must wait an interval amount of time (say, 24 hours) before proceeding.
In a course that is self-paced, this is not an issue. The instructor can simply set the the next module to "unhide" on a specific date and time, however this forces all students to obey the same timeline.
In a self-paced course, there may be a desire by the instructor to facilitate the learning experience by preventing the student from rushing through a self-paced course as fast as he/she can.
This way, an instructor does not have to specify strict dates and times for students to meet the granular milestones throughout the course.
There would need to be a way to make exceptions as well on a student-by-student basis. For example, a student could wait until the last minute (say, 12 hours before the course must be completed) to go through two modules. If there is a "24 hour" wait rule between the two modules, then the student wouldn't be able to complete both modules before the deadline.