1: that is up to you. If you have multiple screens/actions that span one task, then you have n:1. Sometimes there is just one screen per task so 1:1. Realy, it is up to you to decide.
2: Some others should post this I think, we don't have these. In an application I did wich uses JSF (and it's pageflow) with jBPM, there are from 1 to 4 screens per task.
hth a little,
Would somebody please post an example of jBPM with jPDL (pageflow) where there are multiple screens per task? We've been hitting problems with this (documented in another post; I'm working on an example to post to JIRA), and if somebody has a working example, it may help explain what we're doing wrong.