If the user was not created in JobRoller, then you would need to assign their status manually.
For example, let's say a user signs up on the ClassiPress site. If you want that same user to have a specific status in JobRoller, you would need to assign that manually.
This is based on my knowledge of JobRoller and multisite. I'll ask one of our other support people if they can confirm this. At this time, our JobRoller developer is out for a few days. I can have him confirm upon his return.
Thanks