Need to create a page break within a catalog

[Ctrain]

I am using the order tracking template database, I am using the catalog and I have the items grouped by item number, I would like to create a page break between the groups of item numbers. Such as all items with 100 series then a page break before going on to the 200 series numbers and so on. I tried to insert a page break but it makes each item on its own page.

I have my whole database operational except for this part. Any help that anyone can provide would be greatly appreciated. Thank you!