Dunning level 2

Hi All

I have dunning at 30,45,60,75 days

1) I posted with FB70 with baseline date 30 days behind posting date i.e. if posting date is 30th Aug then baseline date as 29th July. This made it overdue.

2) I ran dunning through F150 and dunning was done with all print out & customer showing dunning level as 1.

My question is how to run dunning level 2?

Pls advice in steps.

Regards

Pankaj