How to create a reusable subprocess
This seems like it should be easy. Drop a subprocess on the diagram, right-click, choose sub-process type, and choose reusable. That's what all the documentation I can find says.
But the only subprocess type that displays is Sub-Process.
Now if I go to the sub-process shape on the palette and click on the arrow, it shows 2 types: Sub-Process and Reusable Sub-Process. If I change it to Reusable Sub-Process and drop it onto a diagram, it changes into just a Sub-Process.
What am I missing?