All the diagrams in a model are numbered sequentially, starting at 1.

As you develop a model you will find that you want to change the page order, on order that prints are in a coherent order.

You can change the order of the diagrams in a model in several ways

Change one Diagrams position by using the up/down keys in the list of diagrams

Change a group by dragging and dropping in the Page Browser

Change the entire model by using the Diagram sorter, where you can use smart functions to make the order follow the contents of the model