What are available channels? Can I configure custom channels?

To see your channel, go to Behaviour Report, then scroll down until you see Sessions by Session Source/Medium and click on the drop down box. You will be able to select Default Channel Grouping.

Channels in App+ Web are Organic Search, Direct, Referral, Paid Search, Organic Social and Email.

In terms of custom channels, it doesn’t appear that this is available yet.

Where do I setup channel groupings?

At the moment there is no feature for creating custom channel groupings. Hopefully in the near future we’ll see this available.

The location to configure it in Universal Analytics for reference