Spline Setup

Initially I wasn't sure how to create a second mesh spawn along with the fence but also keep variation to itself. I discovered adding two separate samplers allowed me to have the fence at a distance value and give the bushes a sampler value, respectively. There wasn't much change I wanted to give the end user so I opted to provide custom variables for the bushes, which seemed to make a bit more sense. 

Blueprint Properties

I had a few hiccups trying to find the best way to arrange the fences, to make it seem as if they were connected. I oriented their pivot points to the center of the fence so when they populated onto the spline point, they matched more evenly and would "go with the flow" the user had determined, including curves and sharp turns. This is also where I added the variables for the bush settings, seen below. 

Feature Demonstration