Unreal Engine 4 (UE4) How to create a custom event in a class blueprint (An event to be used or fired by the level blueprint)

Open or create a class blueprint. In the event graph of the blueprint, right click on the graph and type event. Click on custom event... This will be the entry into the blueprint when it gets called. In this case, the instructor is creating a moveby event and the input is added by clicking on new in the details tab and inputs section. The input can be specified as any type.