How to add an IO-Link DI Splitter

[Joel Page]

I was excited to see the new version of Unilogic supports IO-Link. This has made it much easier to support the devices I'm adding but I have one problem. The manual specifies that splitters are supported and even has a picture of a config where they are added with the icons:

However, I only see the option to add a Single Digital I/O

I've searched the manual and site  but can't find any other references to adding splitters.  I can add my other devices fine.