For some reason I looked at that CHML and it didn't appear to be able to interloc 2 breakers. However after looking at it again I see how it operates.
However, again, being a former application engineer I have become somewhat suspicious of the way questions are asked. Nobody has varified why the breakers are going to be interlocked in the first place. It could be a simple application.
But, if you think about it the most common application would be for backfeeding a breaker for emergancy power to a panel. I would like to rule that application out as I doubt if the CHML is listed for that application.
