Collimation question

[blinky]

I've collimated with my laser a Hotech and was wondering how I use this other piece of equipment? It's like a collicap but it's reflective inside, do I adjust the primary or secondary?  I can see three reflections, and assume they should all be lined up, but which mirror do I adjust foe this?

[Mr Spock]

Here's how I do mine with a laser:

 

[blinky]

cool, thats pretty much my normal method - except this time I removed the 2ndry for cleaning, its never been cleaned in about 15 years!