simple way is just to add a script to the obstacle (blueprint) that implements OnTick, and then move it, for example by having a vector as variable on the script, adjust the position property of the transform
https://www.youtube.com/watch?v=0pxC3vsjZoU
(good channel for function explanations)
i also found this
https://www.youtube.com/watch?v=Hpm0OVkuTF0
What are the Actor Transform Nodes in Unreal Engine 4
Source Files: https://github.com/MWadstein/wtf-hdi-files
In this video i decided to talk about how to go from Local to World space and back and how to handle Locations Rotations and Transforms.
Specifically i mention how to use Transform Location, Invert Transform Location, Compose Transform, Invert Transform and Delta and Combine Rotators.
Lots of these nodes are super useful once you figure out how...