how to ignore the 2nd class?

[kumama]

hi, i want to know how to move on to act 2 without deciding a secondary class.

Is there any way to do it? i did most of my primary quests, but when i request to goto war by talking to sir tydus, he said that i'm not ready and i must choose a secondary class.
I heard that you can do it, anyone can help me out?

[HanamichiS]

wondering the same, tho you dont lose anything with the second class, you dont put points into it if you dont want to, I actually find the extra heals and buffs quite useful for a secondary class.