I'm not sure what you mean. Like an eye target? Those things suck. I don't use point at either. You always end up with an eyeball jacked into the lacrimal. Plus to really get point at to work properly you need to dial back the point at strength. I just use an ERC or dependency dial Eyes Rotate (up down, sideside, crossed) for synced. Just my prefs though.

As far as difficulty setting it up? that's a good one. I'd have to look at Apollo or Skye to figure out the set up... I don't think I have either installed. Poor cross eyed Skye, although still very much a cutie pie, is marooned on a DVD somewhere in my memorabilia sack. Apollo, with his wee dainty hands, is in somebody's Google drive somewhere with a forum buried link I imagine. WandW I think. I think Chocolate's Haru might have a target also, I'll look tomorrow.