There are two ways to move your streaming level:
In the editor: go to the Levels tab, select on the streaming level you want to move, and click on the icon in that tab that looks like a magnifying glass (just to the right of the button where you add a new streaming level).
In the level blueprint: add a Get Streaming Level
node, drag a pin off it, and add a Set Level Transform
node. Edit the new transform there. (I didn’t actually test this though)
Just a note, I don’t think you can load the same streaming level multiple times in the same persistent level. I don’t know if this is what you wanted.