I don't understand how this is supposed to work.
Suppose I have the following
>3 hq
>3 tactical squads
>3 veteran squads
>3 dreadnoughts
>3 land raiders
The primary crusade detachment covers the 3 hq and 3 tactical squads.
Can I pick as many of these auxiliary detachments as I want. Is it only 1 auxiliary detachment? Is it a certain amount like 3? I'm trying to figure out how to fit a 2.0 army into these slots.