You can schedule as many episodes as you want.
When uploading an episode, select
Publish at a later time. Choose a date and time for your episode to publish.
Changing the scheduled date/time
If you need to change the date/time of your scheduled post, you can do this from your Dashboard.
Go to your dashboard and you'll see all your
Scheduled Episodes listed.
Select your scheduled episode.
On the episode page select
re-schedule and choose a new date and time.