Dave is asking about the iOS Simulator which runs under macOS where there is an Option key.
But I don’t think the Option key will do what Dave wants either. Or at least I don’t know how. It is used to simulate pinch and zoom gestures, but as far as I know you can’t directly control where the second touch point occurs. The Option key just makes two gray circles appear and you drag towards or away from each other to simulate pinch/zoom.
In the Simulator help file all I can find is;
[quote]User testing should be done on physical devices when real world results are required.
User interaction with a pointer and keyboard is different from using fingers on iOS and watchOS, or from the focus based model used on tvOS.[/quote]
And this cheat sheet from iOS 6 days:
[quote][code]Gestures in the Simulator
Gesture iPad Action
Tap Click the mouse.
Touch and hold Hold down the mouse button.
Double tap Double-click the mouse button.
Two-finger tap 1. Move the mouse pointer over the place where you want to
start.
2. Hold down the Option key, which makes two circles appear that
stand in for your fingers.
3. Click the mouse button.
Swipe 1. Click where you want to start and hold down the mouse
button.
2. Move the mouse slowly in the direction of the swipe and then
release the mouse button.
Flick 1. Click where you want to start and hold the mouse button
down.
2. Move the mouse quickly in the direction of the flick and then
release the mouse button.
Drag 1. Click where you want to start and hold down the mouse
button.
2. Move the mouse slowly in the drag direction.
Pinch 1. Move the mouse pointer over the place where you want to
start.
2. Hold down the Option key, which makes two circles appear that
stand in for your fingers.
3. Hold down the mouse button and move the circles in (to pinch) or
out (to unpinch).
[/code][/quote]