Hi Deon,
I am assuming you do not want to reserved a place for footer and you would like to show footer on last page only.
You need to learn and play the trick on the content: Flowed / Positioned of your subform.
These are the basic things you need to do.
Firstly, check your content area under Master Pages > Page1 > untitled Content Area > Object palettes > Flow direction = Top to Bottom (This should be defaulted)
Secondly, open object palettes > Subform tab on your main subform, do this:
Content = Flowed, Flow direction = Top to Bottom, Check the allow page break within Content.
Thirdly, create 2 subform within your main subform,
First subform, call it subform A, should containing your main/item details.
I assuming your content might grows and get overflow into another page so you would want to set this subform as Flowed too. See sample here
http://www.****************/Tutorials/AdobeForms/Alternative/page3.htm
Put your footer details in second subform, call it subform B . I assume the content is quite fixed, eg, address / page number / signature . So you can set content : Positioned under Object Palettes > Subform tab.
The main idea is, your overall content in form can be flowed to N pages depends on data in subform A, and footer in subform B will be always pushed and display at the end of the page only.
Let me know if you need further info.
Anyway, this is the solution if you change your mind to reserve a place for footer and show this in last page only.
http://www.****************/Tutorials/AdobeForms/Header/Index.htm
regards,
Xiang Li