Place content in scene Editor Mode

Hi! I have content (static meshes, skeletal meshes and other) and list of position (.txt file*).
I need to place these meshes in my scene. But I want to place objects with the help of a script in Editor Mode and save on my level, because there are a lot of objects.

The list looks like this:


... and so on

Please, tell me how to make scripts for Editor Mode?

One way you could do this is convert that data to an .csv file then import it, build a structure and data table using the data. Then create an empty blueprint and in the construction script build a function to place the objects in the scene from the Data Table