I think drew said he was setting up a template, so vojo's tip is correct.
So on, say, page 3, you could select a shape, then:
1. Go to Insert > Field
2. Choose Custom Formula from the list
3. Enter: pages[page-1]!User.jobName
That means, in the page's ShapeSheet on page 1, you'd have to store the job name in a user cell, or a shape data field (custom property)
You can get to the page's ShapeSheet by deselecting all shapes, then choosing Window > Show ShapeSheet.