Designer
Processes, forms and data for DocuWare Ivy are built in the Axon Ivy PRO Designer. It is not a standalone application: it is an extension for Visual Studio Code, and it needs Java and Apache Maven installed next to it. On first start it downloads its own engine, so you can build and run a process on your own machine before anything is deployed.
These guides are the whole path, in order: what to check before you start, the installation, and a short test that proves every part works together.