Thank you for the clarification!
If the option is not showing up, then the current version of either iOS or Xcode in your system do not correspond with their requirements.
The pre-requisites for this setup are:
- Mac with Apple silicon m1/m2/m3 (to be sorted in your Windows iOS app)
- Xcode 15.3 or above with visionOS support installed
Latest version for Xcode can be found at Apple Dev site. If after installing both iOS and VisionOS support from it, the issue persists, we will investigate further for other causes.