Well, I've attached some VI's with what I think are the splitter thing you're asking for, but it could be tricky to get it into a new VI for a similar problem to what I originally posted this thread about—except this time, while you don't need to open the context menu to copy/paste, you can't drag a box to copy a splitter, and also you can't put a splitter in a .ctl. (Well I actually managed to do so by hacking, but it didn't actually work to let you place it.) The only way I know of to copy the splitters out of these VI's are with scripting, using the "Move" method. Here you go though, in case you want to try. Oh, also, you can send me the VI you have and I'll probably be able to mod the splitters for you.
Can you describe in more detail what you wanted with the array?
Horiz Splitter.vi
Vert Splitter.vi