Where could I find all the settings and their functionality that I can use here?
I'm browsing the docs but going in circles with no info.

It's not fully documented, there are some bits of information here [www.sidefx.com]

You could also inspect the relevant handle with the Operator Type Handle Bindings panel along with the Parameter editor. The bindings panel list all handle with their parameters. The transformer node can be inspected in the Parameter editor to see the related parameters.