It is likely that you would want to categorize your JungleMail campaigns. Maybe you have some news campaigns
You can enable Campaign Categorization (Channels) in the JungleMail Site Collection
Here you can also enable categories for templates, and make this choice field required in campaign jobs.
The Channels list scope is set per site collection. This means that you should manually maintain the list of categories (channels) between your site collections.
If Campaign Categorization is enabled, that category choice field will appear in the Recipients tab of the Campaign Builder.
These categories can be set for a template as well.