Apple Podcasts User Guide
You can download specific episodes so you can play them when you’re offline, even if you don’t subscribe to the podcast.
Using that app, you can subscribe to shows and download episodes on your Mac, iPhone, and iPad. Subscribe to and Download Podcasts on Your Mac With iTunes being now more in macOS Catalina, there.
In the Podcasts app on your Mac, search to find podcasts, or click an item under Apple Podcasts in the sidebar on the left.
Do one of the following:
Control-click an episode, then choose Add To Library.
Hold the pointer over an episode, then click the Add button .
Note: You may need to select a show to see its episodes.
To download the episode, click the More button , then choose Download Episode.
Optionally, you can click the Download button next to the item.
You can also automatically download new or unplayed episodes for podcasts you subscribe to. See Change General preferences.
To remove a downloaded episode, click the More button , then choose Remove. If you have a trackpad or a Magic Mouse, you can also swipe left with two fingers on the episode, then click Delete.
You can automatically delete episodes that you’ve already listened to. See Change Advanced preferences.
If you have an iPod classic, iPod nano, or iPod shuffle, you have to sync your device with your Mac to add podcasts and other content to it. See Sync podcasts between your Mac and iPhone or iPad.