You can always save each channel as a favourite and add them that way.
I get how to link a favourite to a stream already in the EPG, the problem is linking a stream which is not in the EPG.
As an example, I have an English & US EPG (can't remember the name of the EPG from the drop down list within ivue - seem to remember it has a girl's name in the title).
I want to link the BeIn channels which are available with Aftermath. The problem is that my EPG doesn't list any of the BeIn channels as they're broadcast from the middle-east.
Essentially, I need a custom-build EPG that includes all the channels from within Aftermath because, as I see it, you can't add a channel to ivue unless it is listed within the EPG.