On the Podcast Dashboard page, you can add channels or delete channels in your account.
Add Channels
1. Log into your account and navigate to the "Podcast Dashboard" page.
2. Click the "Four Squares" icon below to open the channel list and click "+Add Channel" at the bottom of the list to create a new channel. 
3. Click the link in the box to purchase more channels if you have not yet paid for another podcast channel.
4. You’ll be directed back to the Podcast Dashboard page, click “+Add Channel” and enter the URL you want for your new channel.
Delete Channels
1. If you want to delete a channel, click the "Four Squares" icon below to open the channel list and click on the delete icon beside the channel title.
2. In the pop-up box, click on the "OK" button to delete the channel.
How to Merge Podcast Channels into One Account