This topic should help to solve specific use cases with the new WebUI from anaconda.
It is not meant to complain what is missing, it should help to get along with!
Please keep in mind, when using the integrated partitioning tool, it will apply the changes as soon as you make them. This is a main difference to the former anaconda which prepared everything before applying.
If you want an automated installation then this Installer is straight forward and will guide you thru the process. However if you need some adjustments, the automated default layout for workstations and spins will look like this: