The content examples can be found in this folder:
Content/GrappleComponent/ContentExamples

To access the Demonstration Game Mode, open the following level:
Content/GrappleComponent/ContentExamples/GrappleComponent_ExampleMap.umap and play this level in the editor

A playable version of the content examples can be downloaded here!

Please note that the content examples are only intented to illustrate the functionality of the Grapple Component. It does not contain production-ready animation assets.