moving terrain

im trying to make a open world island based game and wanted to have the islands spawn in random places so far ive try to make the landscape actor move to a Target point using add transform and get a warning saying i need to set the root scene component to movable i also tryd to do level streaming to help with performance as its a big map but also having issues loading on a target point the only way ive been able to get the landscape to move is through world composition .

basically what i want to know is there any way without going into c+ to add some landscape acttor’s into a array and to set there location to the same as a target point or actor please help