Is it possible to integrate Media Groups or Sub Channels on all of my Apps?

Yes, Media Groups and Sub Channels can be integrated into all your Apps, such as your TV Apps, your Mobile Apps and WebApp.

Once enabled for your Apps, changes to Media Groups or Sub Channels, such as adding additional Media Groups or Sub Channels, removal of Media Groups or Sub Channels and changing the order of Media Groups or Sub Channels can be handled within you Media Cloud account and will be automatically updated on your TV Apps, Mobile Apps and WebApp in real-time. 

More information on Media Groups: https://help.lightcast.com/video-on-demand#media-groups

More information on Sub Channels: https://help.lightcast.com/video-on-demand#sub-channels