In order for NavTileAgents to find a path, an algorithm can be chosen that is most applicable to your use case. NavTiles comes with three pre-packaged algorithms: A*, Jump Point Search, and Jump Point Search+. Information about the benefits of each algorithm can be found on their respective pages.
The code can be changed to your liking, or you can create a different algorithm that better fits your use case. For your custom algorithm to work properly with the pipeline, you will have to implement the IPathfindingAlgorithm interface. When you do this, it will automatically show up in the pipeline settings in the NavTile Settings window.