I’m unfamiliar with the Clothing Tool, and APEX cloth. And the Cloth Examples map is in one of the main folders of the engine, either Content or Engine Content. Do a search for “cloth” in the content browser search bar when in one of those folders and should be able to find it.
Here’s a link to the doc page, specifically a reference of the Config properties:
It’s quite a bit of properties to adjust for creating exact effects. I suggest searching for a tutorial that illustrates how at least a few of those properties affect a two-sided cloth, specifically a cloth type that is similar to or the same as a towel. YouTube has a ton of tutorial videos for UE4, so starting there might be the best option.