This Job Release Time is control the release of jobs that are being sent to the Driver App.
This feature is used in scenarios where the user has several runs per day for the driver (e.g. AM and PM jobs); and that the jobs are meant to be released in different batches to the driver.
For example:
Current time: 10:00 AM => Job will not appear in the Driver App
Job Release Time: 1:00 PM => Job will appear in the Driver App
Steps
Navigate to Settings > Job > Fields.
Enable Job Release Time > Save.
In the Job Form, enter the time into this Job Release Time field.