Creating new task in DITA, how do I choose Strict or General?

I'm using DITA 1.2 with FrameMaker 12.

I've seen how I can create a new task with DITA > New DTIA File > New task... But the 1.2 DITA standard is supposed to support two types of task, strict or general. How can I specify that I want a general task rather than a strict one?

Thanks,

Archaeopteryx